Healthcare, Reinvented: How Dramatic Medical Breakthroughs Are Quietly Changing Your Life (Professor Sir John Bell)

28 May 2026 · 53 min · 18 chapters

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In short

How medical breakthroughs over ~50 years are extending life and shifting healthcare from treating acute illness to managing chronic disease, with knock-on effects for society, productivity, and healthcare systems.

Key claims

UK life expectancy has risen by about 12 years on average; cardiovascular mortality fell ~70% via prevention (blood pressure, blood sugar, lipids). Cancer progress is driven by immune-based therapies, genetics, better drug discovery, and personalized approaches. Healthcare systems struggle because they were built for acute care, but now must manage multimorbidity. GLP-1s are framed as “scaling prevention,” potentially flattening morbidity curves and reducing time off work/GP visits. AI can improve prevention and predictive analytics, but requires secure, integrated patient data.

Notable examples

childhood ALL leukemia now “effectively cured” via iterative drug regimens, bone marrow transplants, and engineered immune cells; pancreatic cancer breakthroughs include targeting mutated RAS and individualized RNA vaccines using COVID-vaccine-like technology; improved protein structural data and emerging AI for small-molecule discovery.

Guests

Professor Sir John Bell (Oxford; advised UK government; AstraZeneca COVID vaccine role; Population Health Partners; former Roche board member).

Written by AI. May contain mistakes. Listen to the episode to check what was said.

Chapters

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Revolution in Medicine and Healthcare

0:00 to 1:03

Discussion about profound transformations in medicine over the last 50 years.

“This BBC podcast is supported by ads outside the UK.”

Revolution in Medicine and Healthcare

2:27 to 4:23

Discussion about profound transformations in medicine over the last 50 years.

“Hello, I'm John Byrne Murdoch and welcome to Radical.”

Advances in Cancer Treatment

4:23 to 9:10

Exploration of significant advancements in cancer treatments and their impact on survival.

“If some of our listeners today have no idea about what has been happening in medical science and technology over the last decade, what have they missed?”

Innovations in Pancreatic Cancer Therapies

9:10 to 14:01

Insights into the developments in pancreatic cancer therapies and personalized medicine.

“But those cancers were the sort of forerunner of now what's happening in other types of cancers, solid tumors.”

Impact of Medical Breakthroughs on Life Expectancy

14:01 to 17:10

Learn how recent advancements in medicine have significantly increased life expectancy and its societal implications.

“You can make, using the same technology as we use for the COVID vaccine, the RNA vaccine.”

Challenges in Healthcare Systems

17:11 to 21:50

Understand the disruptions in healthcare systems due to increased life expectancy and chronic diseases.

“So, you know, when we're young, and in fact, even when we're middle age, we, on the whole, don't cost the healthcare system.”

Obesity and GLP-1 Drugs as a Prevention Strategy

21:51 to 24:28

Explore the role of GLP-1 medications in combating obesity and their potential as a population health tool.

“Do you think we're far away from a place where essentially GLP wants to be universally available on the NHS or other healthcare systems?”

Economic Impact of Chronic Diseases

24:29 to 28:00

Examine the economic implications of chronic diseases on productivity and GDP growth.

“economics to decide what they were going to spend money on.”

The Role of Data in Healthcare

28:00 to 34:12

Explore the challenges and expectations of integrating healthcare data through AI.

“Healthcare data is a bit more sensitive, and I think we have to be really cautious about that.”

Biodiversity of Medical Innovation

34:12 to 38:24

Discuss the shift in global biomedical innovation and the UK's role.

“If you are, then you can subscribe to this podcast on BBC Sounds so you don't miss future episodes.”
Show all 18 chapters

Inequality in Healthcare Access

38:24 to 41:50

Examine the rising inequality in accessing advanced medical treatments.

“And it's an injectable which lasts for four weeks, not one week.”

Chronic Diseases in the UK

42:01 to 43:24

Discussing the prevalence of chronic diseases in deprived populations and the inequalities in healthcare.

“They're in deprived populations, ethnically diverse populations, often in big northern cities where nobody's had a job for years.”

The Role of the NHS and GLP-1s

43:24 to 44:39

Exploring the NHS's handling of GLP-1 drugs and the need for equitable access.

“What should the NHS be doing with things like GLP-1s?”

Mental Health Challenges

44:39 to 46:08

Addressing the complexities of mental health and the potential role of AI in therapy.

“Where do you think other gains have come from?”

Innovations in Cancer Detection

46:08 to 48:06

Discussing advancements in cancer detection technologies and their implications.

“So I think you've got to be really careful before you do that.”

New Drug Developments

48:06 to 49:35

Introducing SIRNA drugs and their potential to revolutionize treatment for cholesterol and blood pressure.

“And they have done a very big study to look to see whether you could use that in the health care system.”

Future of Healthcare and Radical Changes

49:35 to 52:07

Reflecting on radical changes in healthcare and the implications of life extension.

“you're covered for cholesterol and blood pressure for a year.”

Future of Healthcare and Radical Changes

54:02 to 54:55

Reflecting on radical changes in healthcare and the implications of life extension.

“I kept dealing with the same symptoms, getting the same treatments, and ending up right back where I started.”
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Transcript

Automatic transcript. May contain errors.

0:00This BBC podcast is supported by ads outside the UK.

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1:08I am back, or at least I will be very, very soon. Look, just before you hear this episode, which was fronted not by me, but by the brilliant John Byrne Murdoch from the Financial Times, one of the preeminent data journalists of our age, I wanted to tell you about a guest we've got coming up on Radical called Ben Cohen. He's a rather famous Ben because he opened an ice cream shop in 1978 with his childhood friend Jerry Greenfield. And so one of the world's most recognisable brands, Ben & Jerry's, was born. What makes him radical is that Ben & Jerry's aren't just famous for their flavours. They've also staked their reputation on their activism, turning ice cream into a vehicle for values.

1:48from campaigning on climate issues, criminal justice and corporate power to taking on their parent company over their social activism on the Israel-Gaza war. Ben Cohen has spent decades arguing that running a business should mean more than just profit. We'll be asking what radical business activism really looks like, whether big brands should pick sides and whether his philosophy can withstand the corporate climate in Donald Trump's America. As always, we want your radical questions. please do send us a voice note for Ben Cohen on WhatsApp 0330 123 9480 or you can email radical at bbc.co.uk. Thank you and now on to this week's episode.

2:38Hello, I'm John Byrne Murdoch and welcome to Radical. I'm stepping in for a mole this week while he's away in Scotland filming The Traitors but I will stay 100 % faithful to the ethos of this podcast, where we explore the global trends reshaping our world and the radical ideas that will define our future. Outside the studio, I'm a columnist and chief data reporter for the Financial Times, where I specialize in using data and evidence to make sense of the big changes happening in the world. So for this episode, I wanted to explore one of the most profound and often overlooked transformations of our time, the revolution happening in medicine.

3:12In just a generation, diseases that were once considered a death sentence have, in many cases, become treatable, manageable and increasingly survivable. These advances are having a huge knock-on effect on our lives, and I really want to find out more. Joining me today is Professor Sir John Bell, Emeritus Regis Professor of Medicine at the University of Oxford. He's advised the UK government on life sciences, pharmaceutical strategy and COVID testing and played a pivotal role in the development of the AstraZeneca COVID-19 vaccine during the pandemic. He's currently a partner at Population Health Partners, a firm focused on investing in and advising life science companies, and he previously served on the board of pharmaceutical company Roche.

3:54Together, we're going to explore the technological and organisational breakthroughs driving this extraordinary progress and what these changes mean, not just for healthcare, but for the future of society itself. But before we begin, a quick reminder. If you subscribe to Radical on BBC Sounds, you won't miss future episodes, including Your Radical Questions, our listener Q &A released every Monday. Now on to this week's episode with Professor Sir John Bell.

4:22Professor Sir John Bell, welcome to Radical. It's a real honour to have you with us. My pleasure. If some of our listeners today have no idea about what has been happening in medical science and technology over the last decade, what have they missed? Well, they've missed a lot, I'm afraid. And actually, it's not their fault because I don't think we do a very good job of telling the story of what's happened in the last 50 years. So I started training in medicine in 1975. And since then, which is sort of roughly 50 years, there has been absolutely dramatic changes in the way we manage all forms of different disease.

5:03And, you know, there's a long list of things that we've achieved. But just to give a few highlights, cardiovascular disease, when I was a child, used to kill all my parents' friends. They all used to die of coronaries or strokes. There's been an almost 70 % reduction in cardiovascular mortality, cardiovascular disease mortality in that time frame. I mean, 70%, that's massive. That's seven out of 10 people who would have died are not dying from that disease. And that was the single commonest killer. And where has that come from, that gain? That has largely come from prevention, interestingly. And I'll come back to that later in our talk, because the availability of therapeutics to reduce the major risk factors of those diseases, which are blood pressure, blood sugar, and lipids, has really dramatically caused a fall in that mortality and morbidity.

5:54So, huge impact. Similarly, cancer, diagnosis of cancer, in those days, almost nothing you could do with almost every form of cancer. It was basically a death sentence. Some were fast, Some were slow, but it always produced the same outcome. We've had this terrific change in our approach to cancer, which has focused recently on using the immune system to tackle cancer. And I think what we've now come to realize is that a lot of the early approaches to cancer, which was basically trying to stop cells from proliferating quickly, they worked a bit. But the truth is they probably had their effect by stimulating the immune system to slow down the cancer and control it.

6:37Sorry, can we talk a little bit more about that? So an example that struck me was with childhood leukemia, right? So when I was growing up in the 80s and early 90s, this was really seen as a death sentence. If you heard that someone had leukemia, you thought, wow, what a tragedy. Now, the survival rates have dramatically improved just over the last couple of decades. Can you talk us through what's happening behind the scenes there? Yeah, there are three or four major types of leukemia. And you're absolutely right. 30 years ago, they were mostly all a death sentence. Very tragically, a couple of them occur in very young kids, which made it even worse, because these are kids who never really had a chance.

7:15But then there are other forms that occur in later life and people in middle age. Of those, there's only one left, which has really not been tackled by novel therapies. But this happened, I think it's really important to realize that these breakthroughs in medical science, they usually don't come in a single jump. They usually come with a series of iterative improvements in what you do, building on what the previous guys have done to actually steadily improve survival and in some cases, completely eliminating the disease. So the early therapies in childhood leukemia were mostly the drugs that leukemias replicate, they turn over very quickly.

7:58The cells replicate very, very frequently. And so if you could stop that, you could actually put a hold on it. And then, of course, there was the development of bone marrow transplantation, which has been hugely powerful. And then more recently, the development of cells, immune cells, which have been engineered to go in and fight the leukemia on site. So that's been a very long journey, but most children with the commonest form of childhood leukemia, which is called ALL, acute lymphocytic leukemia, they do really well and they're effectively cured. Similarly, adult leukemias used to be a death sentence.

8:36Now, multiple drugs available and it's really turned into a chronic disease. CLL is another adult leukemia, really terrific new therapies for that disease as well. Not everybody gets managed perfectly, but it does really well. It's only acute myeloid leukemia, which is still problematic. But there are some forms of that. I won't go into the detail of the names, but there is a subtype of that disease where it's possible to treat the disease highly effectively. And most people go into remission. And when they're in remission, they're cured. It never comes back again. So in leukemia, we're winning.

9:13But those cancers were the sort of forerunner of now what's happening in other types of cancers, solid tumors. and there we're seeing some quite long life expectancies in those patients. Right, so an example that I came across recently was the prospect of a vaccine for pancreatic cancer. Now, one of the reasons that seems to be so significant is that pancreatic cancer has been so deadly. But can you talk a bit about that and what's going on behind the scenes with this one? Yeah, so pancreatic cancer is kind of the worst of the worst of the solid cancers. It has a very long gestation period. It develops over, some people suspect, 15 years.

9:52So there's a long period of time which just grumbles away. It's in a bit of the body where it doesn't produce a lot of symptoms until late, and it's very difficult to detect. And as a result, it gets diagnosed late, and it historically has carried a very, very high mortality. It's essentially, with only a few exceptions, it's a fatal disease. So the biggest two breakthroughs in that area are one, there's an enzyme called RAS, which seems to be mutated in a lot of people with pancreatic cancer. And the drug discoverers are busy trying to develop small molecules. People thought it was undruggable.

10:31It turns out to be druggable. So there's a great excitement about getting that to work. And just quickly on that, what are the technological changes that have made that drug discovery process faster and where are they headed at the moment? Yeah, so much better structural data on the proteins you're trying to tackle. Because what you're trying to do with some of these things is to find bits of the protein which you've got little nooks and crannies into which you can slip chemicals or small molecules which end up being drugs or therapies. So we're much, much better at that. And it was that that scientists discovered, that there was a little crack in the RAS that they could get at.

11:07So that was really the breakthrough. But in addition to that, Of course, there is the advent of AI in that space, which I think hasn't yet transformed that space, but it's moving in that direction. For proteins, it's definitely made a big difference. For small molecules, not yet, but it will in the end. And these things are moving really, really quickly. So would it be fair to say there are almost two things going on here, but two things that are going on is drug discovery. And then you mentioned the word engineering earlier. The fact that we're talking here less about these general one-size-fits-all medicines and more tailored to the individual.

11:46Yeah, exactly. So I think what we've come to realize, and of course behind all this, has been a remarkable revolution in our understanding of cancer and what causes it. And in particular, an understanding of the genetics that underlie cancer pathogenesis. So what we do know is all forms of cancer are driven by genetic changes. And they occur in people as they get older, but they also occur in people who are exposed to carcinogens that actually cause the DNA to break and reassemble. And that, we understand, creates the biological process that actually leads to uncontrolled growth of cancer. So that understanding of genetics has been very powerful.

12:35And then the other thing which is also really interesting is that we also now understand the role of the immune system in cancer. And that's, again, been going on in the background. So when I started training in medicine, it was pretty rudimentary. The understanding of immunology, and particularly immunology in cancer, didn't exist. But there's been this huge expansion in our understanding, both of the immune system, what are the things that make it work, but also how it impacts on diseases like cancer. And so what we now believe to be true is that all cancers in the end turn out to be recognized as foreign by the immune system.

13:16And the immune system in many early cancers, so in guys my age, we're probably popping up with a brand new cancer every week or maybe even every day. And our immune system comes along and goes, ping, we're not having that, and it gets rid of it. So I've got a surveillance system that keeps me cancer-free. And it's only when I break through that and get tumors that have expanded a bit that the immune system has a hard time dealing with it. So this combination of our understanding of the immune system and our understanding of the genetic changes that cause that are really the things that sit behind one of the biggest advances in pancreatic cancer, which is that you can go into a pancreatic cancer and identify the new genetic changes that have occurred to cause that cancer.

14:02You can take them out. You can make, using the same technology as we use for the COVID vaccine, the RNA vaccine. So you make an RNA, which you can do very easily, and then you put that back into the same person. So it's an individualized vaccine that then stimulates an immune response to those antigens, which are unique to that cancer, to that person. So not everybody with pancreatic cancer can access the therapies. Do we know quite how to use them? Not yet, not yet, but that's progressing. So I think even the toughest cancers are going to be tractable with that. Yeah, which is amazing. And that raises a couple of interesting questions, though.

14:43So something you mentioned early on is how the medical community, shall we say, has not done an amazing job of communicating these successes. is is part of the what's going on here as well that these are quiet games when people stop dying of things or live a bit longer it's not a dramatic striking thing can you talk talk for a minute about what the impacts of these have been at the population level yeah so this is this is a central issue and again we haven't really told the story properly and it's gone sort of unrecognized in my view. But since I was a medical student to now, we have in the UK added 12 years to life expectancy on average for every person in the country.

15:28Now, I just, people go, what does that number mean? Well, 12 years is a lot. You know, if average life expectancy is 75, 12 years is about an additional 18 % of life. And that means that lots and lots and lots of people, in theory, everybody on average, is getting 12 more years to enjoy their retirement, to spend time with their kids, to maybe stay and work longer and be productive contributors to society. 12 years is a very long time. And those are all attributable to the developments that we've seen in biomedical science. Now, the problem with that, of course, is because we haven't recognized it, and we haven't waved a flag around, you know, when Elon Musk sends a rocket up that comes down and land somewhere, everybody shouts and says, it's all terrific, we're going to the moon.

16:15That, in my view, is a trivial contribution compared to adding 12 years of life to everybody, basically everybody on the planet. And in fact, in developing countries, it's more like 15 or 18 years. So this is something that we haven't made a lot of noise about. But the problem is that as soon as you've done that, it's hugely disruptive. It's disruptive to everything. So people say, we don't understand why the healthcare system doesn't work. Well, hello, if you've added 18 % of activity to a healthcare system that was designed for treating acute disease in the 1960s and 70s, which is now having to manage all these chronic diseases in people growing old, don't be surprised if the old model doesn't work.

16:57And that's essentially what's happened everywhere. It's just fallen over. So because the most expensive period of someone's life in terms of healthcare is those later years. it's now almost the number of expensive late years people have has doubled. Exactly, exactly. So, you know, when we're young, and in fact, even when we're middle age, we, on the whole, don't cost the healthcare system. There'll be a few cute things that people have to deal with, but mostly, and this is evident by the fact that people in their 20s and 30s never go see their GP and they're fine, so let's not worry about it. But as soon as you start to get into your late 40s and 50s, you start to accumulate these major chronic diseases that are all driven by a set of risk factors, all of which are controllable, but we don't control them.

17:43We don't control any of the risk factors. We wait till people get a bit of chest pain, have a stroke, get diabetes. And one of the things which has become really apparent is that you don't just get one of these diseases, you get multiple diseases. So this issue of multiple comorbidities, which is people having one, two, three, four different diseases all at the same time. That then arrives at the door of the healthcare system. Guess what? The GPs all go, oh my God, I can't do this. There are too many elderly people with all these diseases. How am I going to do it? And then the A &E departments all fill up with exactly the same people.

18:18And so that healthcare system basically collapses. And that's what we've seen in this country really over the past 15 or 20 years, it's just been growing steadily. And it's true in almost all countries is that their healthcare systems don't work because it's a very different model. It's a, you know, if you disrupt the system by adding 12 years of life, don't be surprised if the old system doesn't work. And the problem is we haven't said, oh my God, the old system doesn't work. Let's pull the handle and see if we can fix it some other way. Now, one thing that I was thinking while you were talking through this is that prevention sounds quite low tech, but then you mentioned obesity.

18:53And I thought, well, one thing that our listeners probably have heard of is the GLP-1s, these weight loss drugs. What's your view of that? The GLP-1's essentially a miraculous way to scale prevention. What do they do to move the needle? So this is a really interesting inflection point, I think, in our whole approach to prevention. And it's partly because the drugs are really powerful. They do. I mean, there are a million ways people have tried to lose weight. Most of them don't work. The standard approach of health care systems, when you go see somebody and you've got a BMI of 35 or 40, They say, we think you should join a gym and eat less food.

19:33Well, honestly. Anyway, I promise you that does not work. And there's lots of evidence that it doesn't work. And the numbers have been getting worse. And it doesn't work basically because it's really hard for people. It's really hard. It's really hard. And you've got to have some sympathy. Because first of all, the medical profession for many years did not treat obesity as a disease. They treated it as a sort of social problem. You know, you see Molly over there. She's a bit too big. She probably doesn't exercise. She sits in front of the TV, blah, blah, blah. So, you know, there was a sort of overhang of social prejudice saying, you know, that's her problem, not anybody else's.

20:09The truth is we now know there are massive drivers of obesity that are largely genetic that actually have to do with how much food you take in, but also what you do with that and how you metabolize it. So it is a disease just like cancer, just like cardiovascular disease. So as soon as you get a novel therapy that actually breaks that open and can actually give people an opportunity to lose weight at scale, then that becomes a population health intervention. And what will drive that, of course, is that we've already seen dramatic reductions in the price of the drugs moving from injectors to oral drugs.

20:47Then we'll have orals and generic orals. And this will be like statins. people will take these things routinely, they'll keep their weight down. And that has huge benefits across multiple different diseases. I think not even I, I mean, I've been on this for five, six years now, but I didn't actually even recognize that it would have such profound effects across many different aspects. Just to clarify, when you say you've been on this, you mean working on it rather than injecting? Well, it's very interesting because I've been debating going on it myself, as you know, because you're looking at me, I'm not exactly a big overweight guy, but it's benefits in things that are not got anything to do with how heavy you are, but it has benefits for people with BMIs of 25, for example.

21:30My BMIs is 22, so I keep thinking, maybe I should be on these drugs. And it's interesting because I think the NHS has finally realized that actually it's a very powerful prevention tool as well as allowing people to lose weight. So I think that is a really good example, but if we're going to use those powerfully, We have to use them across the whole population. Do you think we're far away from a place where essentially GLP wants to be universally available on the NHS or other healthcare systems? And when I say far away, maybe 10 years. But do you think that's where we should end up if we're taking this seriously?

22:03I think that's the inevitable consequence of this. I think these will be used hopefully by very large numbers of people. It'll reduce the risk of these diseases. It'll flatten the morbidity curves. I mean, we are really a sick country. And unless we get on top of that, all the economic drag associated with that is going to be really problematic. All those factors are much worse in deprived populations. It's a really big problem. So in a sense, we've got these two families of technological breakthroughs. One is extending life and the other is now extending the health and the quality of life. Yeah, exactly.

22:37What are some of the other big society-wide economic productivity? What are the impacts? What does this new world look like? Well, so you've written very coherently about the impact of ill health on productivity and GDP growth. And we have another problem in the UK. And just to be crystal clear, I'm a massive advocate of single-payer publicly funded healthcare systems. So there's no intention to suggest there's a better system because I don't think there is. But I think the system, because they're very big and very old, they tend to get ossified in the model and they haven't really shifted the model to something that's focused on these particular aspects of trying to keep people fit and healthy longer.

23:25And when you get a population which starts to tail off in the early 50s in terms of their health, people leave work, they have many sick days, the healthcare costs go up through the roof. And the drag of that in terms of national productivity and national GDP is huge. and you may or may not have seen the recent McKinsey's report, which I think puts some numbers to this, and that is by 2050, the drag on economies from that chronic disease burden, that means people out of work, people not as productive as they could be, as well as the healthcare costs, which are actually the smallest bit of that, will be about 7 % of GDP.

24:10Well, you can explain it to him because you talk about this language all the time. 7 % of GDP is a very, very, very big number. And in fact, by 2050, that adds up to$10.5 trillion of cost that is entirely attributable to this massive burden of chronic diseases across the planet. So I was referring to the NHS because the NHS had a model whereby they relied on health economics to decide what they were going to spend money on. And that was really to decide, is this pill better than that pill when it's used in the healthcare system? And how much money does it cost the healthcare system? That, in my view, is completely outdated.

24:50What we need to do is say, what is the overall cost to society from these illnesses? And how do we tackle them to deal with that GDP drag, productivity drag that we're seeing? When we're talking about that 7 % figure, is that assuming population health looks like it does today? It's assuming not only that it looks like it does today, but it continues on the trajectory that it's on today. But the trajectory there, if we're talking here about productivity, presumably we're talking about people in their 50s. Yeah, exactly. Are we saying that productivity has been worsening and health worsening? It has.

25:23And the major factors in that are obesity, which has been a big factor. And you will have seen in the papers this week that taking the people who are at the extremes of obesity and putting them on GLP-1s reduces the time off work by 50%. It's a massive number and also reduces the time that they're in the GP surgery by 50%. So these have quite big effects over time. Mental health is another big problem. And, you know, we haven't really tried to tackle that in a systematic way. But that's another reason why people are off work. Now, a word that came up earlier or an initialism that came up earlier was AI.

25:57Yeah. What role has AI been playing in whether it's on prevention or extension? and what do you see coming down the pike over the next decade from that area as well? Yeah, so this is pretty interesting because I think we can say it as read that it makes systems work better. So you could develop a prevention system which was driven by AI that would actually know when to call you in to get your lipids tested, would know whether your blood pressure need control, all that stuff. And you can automate a lot of that using AI because you can use that as basically a coach to actually manage people in the system.

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26:36So that will take a big burden out of what you do. But the other thing where I think it's really powerful, if you set aside the drug discovery piece, which will be a place. But the other area is what I call predictive analytics. So when you're 25, it would be kind of nice to be able to say on the back of a blood test, actually, you don't have to worry about the following 10 things because your risk of that is close to zero. But you better be careful about that and that and that. And what can we do to help you reduce the risk factors for those diseases and as a result, prevent those diseases when they come along.

27:20And, you know, many of those bits of data are available. The algorithms haven't really been refined to understand how best you can make those predictive analytics, but you can be sure we're going to do it a lot better than we do now. But with AI, a couple of concerns often come up, right? So one is that everything you're describing here relies on having an enormous amount of data to feed into the models, both when you're training them and then when you're using that when people raise concerns about the amount of data that needs to be stored there digitally and the risk of security issues you know we had the uk biobank leak recently yeah how do you think or how do you suggest people should think about the trade-offs involved there yeah so first of all we live in a world of data and we live in a digital world and lots of our data is out there our finance data is out there and lots of our workforce activity in the workforce data is out there, all our educational data is out there.

28:18Healthcare data is a bit more sensitive, and I think we have to be really cautious about that. But at the same time, I think we've had a problem, and the healthcare system doesn't work very well, because we've siloed all the bits of data into multiple different data sets, and it doesn't talk to each other. And AI will be hugely effective at getting that information to talk to each other. So for example, GP data doesn't talk to hospital data, hospital data doesn't talk to NHS data. I mean, it's a mess, frankly. So the new legislation which is planned is to bring it all into a single patient record, which I think is a good idea.

28:50What does this look like in other countries? Because, again, there's a lot of discussion here about the risks of having it all in one place. And people are concerned about specifically the U.S. tech company Palantir's role here. What do other countries that do this well do? How does it work? The answer is that the countries that do it well are the Scandinavian countries. They do hold whole data sets and they use that to drive their health care systems really effectively. similarly you know the small asian countries like singapore do a pretty good job but i i think there is an issue about two big issues one is should we take uk people's data healthcare data and ship it offshore my view is no no no no we're not doing that it's a national asset people are sensitive about that and we shouldn't be sending it off to the u.s or china or anywhere else for people to play around with it we should be using it to generate algorithms for sure but in a secure environment in the uk and that a will create assets in the uk but it'll also bring jobs and people who are there's no point in pretending ai is not going to happen it is i just rather have it happen here in the uk and if you say keeping it in in the uk's borders does that mean it we shouldn't be the nhs shouldn't be working with firms like palantir so i don't know enough about the Palantir story to comment, I can say one thing, and that is in COVID, Matt Hancock introduced the COPE notice, which was basically a public health bit of legislation that allowed access to healthcare data from wherever it came from to bring it all together so we could work out what was going on.

30:32And so they introduced the COPE notice, and that was a massive change for the way we were able to manage the pandemic. We know who had a vaccine, we know who had a disease, who had a test, all that stuff. And it was all hooked up together. Palantir did a lot of the work to organize and orchestrate that, and it worked pretty well. Now, that was in an acute emergency, so that's a different set of circumstances. But I don't have a view provided the data is securely positioned and isn't exported and moved around. Because, you know, there are two things. Many of these companies, they don't actually really want the data.

31:10They want you to use their software. And that's a different setting. There is a big problem, though, and that is that most of this has happened in the U.S. Most of the developments in AI and machine learning happened in the U.S. and China. And that is not because we don't have some of the most talented people in those spaces in Europe, and in particular in the U.K. But we have singularly failed to grow any companies that could do it here on shore, which is a really big problem. DeepMind, of course, part of Google, but, you know, they are largely based in King Cross. I, you know, I think there is a, there's a strategic issue here about whether we want it all to be done somewhere else or whether we want some of it to be done in Europe.

31:49Because I guess that the specific concern that's been raised with Palantir is that almost by necessity, by definition, you have to give U.S. software engineers unlimited access to this data. that that's something that's been confirmed by reporting by the financial times yeah for example so even if there is not an intent to go in there and fiddle with things there is exposure there there is risk and are you are you basically saying that that is unavoidable unless we have a british palantir equivalent that can keep everything access the entire thing on shore well i first of all it i think whatever anybody does it's got to be on shore and that you can control so shipping this stuff around is not necessary whether it's being done by an american or a chinese or whatever company on shore or a uk or european country that you can control and we do need a we do need a european or a uk champion to actually take that forward in my view i think it's a real strategic mistake not to have one yeah so there are many many many multifaceted things going into this and i should just interject at this point and adds NHS England's statement on Palantir is that the NHS has strict policies in place for managing access to patient data and carries out regular audits to ensure compliance, including monitoring the work of engineers, helping to set up the central data collection platform that will track NHS performance and help improve care for patients.

33:14Anyone external requiring access must have government security clearance and be approved by a member of NHS England staff at director level or above. Yeah, I think that in fairness to the NHS, they are pretty good at this, actually. And they take this really, really seriously. And the reason I know that is that, as you know, I set up this large cohort, which is five times bigger than Biobank called Our Future Health. And we've got almost 3 million people in that, consented people with their data. and the NHS, even though the people have consented to let us have access, the NHS have been really, really rigorous about checking all the security conditions that we've got.

33:55Where is it stored? How is it stored? What are the security capabilities that we've built to secure the data?

34:09I hope you're enjoying my conversation with Professor Sir John Bell. If you are, then you can subscribe to this podcast on BBC Sounds so you don't miss future episodes. Also, if you do subscribe, make sure you've got push notifications turned on, and that way you'll get an alert whenever we publish a new episode so you'll never miss out. And now, back to Sir John.

34:30It strikes me that a lot of these technologies and solutions have been generated to a large extent on the back of US financing, that a lot of medical innovation comes out of America. But in the last year to 18 months under Donald Trump's second term, we've seen the US pull out of the WHO. We've seen under RFK Jr. as well, this withdrawal or cancelling of investment in mRNA vaccines, which we talked about the importance of earlier. How do you view what we're seeing here in terms of the, we're really seeing revealed the vulnerability or reliance of a lot of this stuff on the US. You've worked yourself quite closely with Larry Ellison in the past.

35:08Should we be concerned that there's a sort of fickleness or capriciousness here that puts a lot of these gains at risk? Well, so first of all, you're absolutely right to highlight this. It's been one of the most rapid and transformational changes in the global biomedical arena and ecosystem that I've ever seen in my career. And it's happened really, really quickly. Don't you remember? you know, he's only been in post for 18 months and it has completely and dramatically changed the environment in America. And I know people are optimistic that it'll get back on its feet, but it won't immediately.

35:48It's going to take 10 years to get it back on its feet. And that's a really big problem because these innovations, which have had such a profound effect on society and our wellbeing, were driven by America largely. That was by far the most successful arena for doing this. So I think that two things we need to think about. One is that produces the rise of China. So at the moment, the dominant force in biomedicine is China, and no one will dispute that. They've got great stacks of new interesting molecules that people are, and the pharma industry are now piling into China to find their next drugs.

36:24So that's, it's not a bad thing, It's fine, but you do have to realize that America has kind of lost the upper hand in that whole space. Now, in AI, China, it's hard to tell where China is, but China and America, again, are level pegging, in my view, in terms of their capabilities. The Chinese AI capabilities and algorithms are not as widely used because there's a security issue about using them because you tend to lose all your data. Sorry to interrupt. Does this mean that countries like the UK or parts of Europe should be thinking, rethinking their approach to working with China in this space?

37:02Yeah. That's where the money and the tech is. So I think we've got to get around to thinking about how we do work with China in this space, because that's a real force. But I also think that, you know, Europe broadly and the UK specifically needs to sort itself out, actually, because, you know, we've always been able to compete. We're not we haven't been the biggest, but we've done some terrific things across the whole of the biomedical space. And, you know, in the last 10 years, we've become a less and less desirable place to do life sciences. As you know, most of the industry said, we've had enough, we're out.

37:39And I think it kind of misses the point that the discoveries that have come from that industry are the ones that have generated your 12 years of additional life expectancy, the benefits of cancer, cardiovascular disease. That's where the discoveries for Alzheimer's disease will come from. and we just seem to not recognize how important that component is of the whole story. And in prevention, prevention will come from therapeutics. It won't come from buying a pair of jogging shoes and going around the block three times, I promise you. That is going to be the driver of prevention and that's how we're going to flatten that morbidity curve.

38:15So I really do think we've got to get our act together and become much more of an engine for innovation in the biomedicates. And so what explains why, with Britain's history here, or look at some of the GLP-1s coming out of Denmark, what explains why Europe and the UK seem to be quite good at that side of things, but very bad at the scaling, the financial side of it? Yeah, so you're right. And if you look at discovery science, interestingly, what I think is probably the best GLP-1 is the one that was produced out of Steve Bloom's lab at Imperial, which was then developed by Clive Meanwell and those guys and sold to Pfizer recently.

38:54And it's an injectable which lasts for four weeks, not one week. It can be used as an oral. So it's a great GLP. And guess where it came from? It came from the UK. Steve Bloom was the original guy to work on all those peptides. So we do have this unbelievably powerful biomedical research base in the UK, which we really do need to exploit more effectively. And you've highlighted the problem because we've got a lot better at creating small companies. The university creates lots of companies and they compete like crazy. But the truth is they either get bought and moved to America or they fall over.

39:28and the absence of scaling capital to allow those to grow, to become real biotech companies. And by that, I mean, do they pay tax or not? And the answer is almost none of them pay tax because they never produce a product, they never sell a product, they never grow. It feels like there's a bit of a catch-22 here because when I hear about the calls to force or strongly encourage UK investors to invest in UK firms, the pushback is, well, UK firms have performed poorly if we've been doing that for the last 30 years, would be worse off than investing in the US. But maybe a catch-22 there, that growth in the UK, pharma and tech firms has been weaker because of that lack of investment as well.

40:06Yeah, I think, look, it's a circular argument. And it does require investors to make good choices. So, you know, if you make bad choices, you're not going to make a lot of money. But are there opportunities to make money out of tech firms in the UK? There absolutely are. Do we have the skill base to do that? We possibly do, but there's not a lot of experience in investing in those in the UK. And I do think there is another component of this which is really important, and that is when you go to Silicon Valley, you go to Boston, to the biotech sector, you have these fantastic entrepreneurs, innovators, entrepreneurs, scientists who actually really know how to take something and turn it into something really terrific.

40:54and that is what the American system has really brought. So the real question is, can we develop that more effectively here? And we may have to import a number of those people to make it all work, but I don't think this is beyond reach. And I think the Steve Blum story is a classic example. That really took off when some American innovators arrived and actually turned that into a really successful venture and then sold it for$10.5 billion. I mean, if investors don't think that's a good result, I don't know what they're thinking of. Another aspect of this that often comes up, and we'll get into this more in the Q &A section with listeners as well, is inequality.

41:28We're talking here about increasingly expensive and technologically and data intensive treatments and approaches. Is there a concern here that whereas previous general health care gains were distributed across the world, things like penicillin, we're now talking about things which are much more concentrated among wealthy countries and even within those countries, wealthy individuals? Yeah. So the inequality gap has got bigger, not smaller. And I think this is a clear criticism of the way people have approached the prevention agenda. So where are the big domains in the UK, for example, where the chronic diseases are the worst?

42:07They're in deprived populations, ethnically diverse populations, often in big northern cities where nobody's had a job for years. And that's where the burden of disease is. You know, if you go to Chelsea or you go to Kensington, you don't find a lot of really obese people. But if you go to the big northern cities, you find a lot of it. And I think the failure to grapple with this and to deal with it in a sensible and equitable way is going to just, it already has, increased the inequalities of health. So, as you know, there are tens of thousands of people in this country on GLP-1s. And they've done it all privately.

42:43They've just said, screw you, we're going to go buy some. and they're the people with money, people without any money haven't had that opportunity. So as I said earlier, I'm a real believer in the national health system because it should allow you to drive those equalities really effectively. And the complete and abject failure of the NHS to grapple with the GLP-1 thing is a sign that they don't really care about the people who are sitting in deprived circumstances and who have a massive obesity problem. You should say here, the NHS are not in the room with us now, and I'm sure they would say something differently.

43:15No, they won't like that. I'll get beaten up for that for sure. But that was not a good set of decisions, I have to tell you. What should the NHS be doing with things like GLP-1s? And isn't part of the problem here, again, that they are significantly more expensive than a lot of the treatments that the NHS has covered in the past? And is there something that maybe needs to look different in the funding model when we're talking about everything coming in at six figures? and that kind of thing. So these drugs, first of all, they're falling in price rapidly. But the other thing that the NHS needs to recognize, it's got massive purchasing power.

43:52NHS England alone is 55 million people. It can drive unbelievable discounts on the drugs that it buys. Because remember, the cost of goods for many of these drugs ain't that great. So they can still develop really big margins, but at a very low cost. And of course, one of the great things about the NHS is that once it's been accepted in the NHS, it doesn't need to be marketed. It just gets used because there's a requirement of people to use it at scale. So I think speeding all that up will make a massive difference, both in terms of the cost base, but also the number of people who can get access to these drugs.

44:27And I think it's not just those, but it's a system for trying to manage people's blood pressure and people's lipids. You know, that has to be done at scale. Thinking perhaps more broadly than the UK, when you look five years down the track, Where do you think other gains have come from? Well, other gains, but also other impacts of the gains we're seeing today. What is this all going to look like in a few years' time? I think there's a big issue, which I've alluded to before, which is one of the biggest drags on economic productivity, which is mental health. And there is no magic bullet for mental health.

44:59There's no tablet you can take. There's none of that. So we've got ourselves in a bit of a pickle with mental health. And again, there's no real system to deal with it. But there are lots of young people, and these are the most productive people in society, who actually are really disabled and unable to go to work and unable to function normally. And I do think we have to lean into that and work out what we do. And, you know, there are ways to actually help counsel and support people in that situation. And we don't really have a system for doing that systematically. Some of the American states have developed that.

45:32And it's interesting because they use U.K. suppliers to do that. But I think that's going to be a big drag. How do you think about AI in that space? Because it strikes me as interesting that cognitive behavioral therapy and conversation based therapies. Do you think AI could help with this mental health problem? Yeah, so we're in this tricky place where people are anxious about turning it all over to an AI algorithm and a chatbot, partly because there is a history of kids committing suicide on the basis of the information they got from the chatbot and how it gets interpreted. So I think you've got to be really careful before you do that.

46:11But having said that, there are some very responsible counseling services which are now using these quite effectively. And don't forget what we said about AI a year ago is not true today. There's been this incredible inflection point which occurred late last year where everything seems to work a heck of a lot better. So I think ruling that out would be a really big mistake because it can produce really beneficial effects for people in the mental health space. So I think we do need to think quite hard about that and how you regulate that and manage that is a whole new world. But it's hard to imagine that we're going to get on top of this with a load of counsellors, you know, sitting on the telephone.

46:52Very big picture. If people are looking for things to get excited about, things that you see coming down the line in the next year or two, in the whole health tech space, what's keeping you awake at night in a good way? One of the really exciting things, so as you know, I'm an immunologist and a geneticist, and I was very involved with David Cameron and setting up Genomics England and all that. So I'm really au fait with that technology. and I think that has now been dramatically commoditized. So it is going to be so cheap that we can all have our genomes done, probably all have our genomes done at birth.

47:31But then other applications of that to detect, there's interest in detecting circulating DNA in the blood. Doesn't quite work yet. The GRAIL study didn't meet its primary endpoint. Tell us a little bit more about that. So cancer cells die and spill their DNA. And as I described earlier, the cancer cells have mutations in them and they have variations in their DNA. So there's DNA in your blood if you have a cancer, which you can detect that says, I think you've got a cancer. So, you know, the first company to actually spot that was a company called Grail, which is an American company. And they have done a very big study to look to see whether you could use that in the health care system.

48:12And they set some very demanding endpoints in their study, which they didn't make. or the share price crashed and so on. But I think if you look at the data, there's enough information there to say that it may not be the grail technology, but some technology is going to be able to detect those signals. And particularly in people who are at higher risk of cancer and who maybe have some early symptoms, but they don't know whether it's cancer, they'll be able to pinpoint that because getting to early stage cancer, that is the solution to curing cancer. And now with immune therapies, If you get into stage one and stage two disease, you'll cure it, I'm pretty sure.

48:49So that really gets me, because that could transform the whole cancer paradigm. Really, really remarkable. So we've got these rapid gains in early stage detection, rapid gains in treatment, and alongside with GLP-1s, the potential for rapid gains in prevention as well. Yeah. And one other thing which is playing out, there's a new type of drug called an SIRNA, which is a drug which goes and blocks the genes so the genes don't work properly. So if you find a gene that's causing trouble, you could block it quite easily. And that comes out of a company in Boston, but has been developed to reduce people's cholesterol and to reduce people's blood pressure.

49:30and those are being coupled together so that with a single injection you're covered for cholesterol and blood pressure for a year. Come back next year, get your flu vaccine and have a shot of the SIRNA. I mean, these are remarkable innovations that are going to make this whole story just a lot easier to deliver. And presumably, again, with a lot of this, the life extension, sorry, there's going to be all sorts of interesting second order effects that we're only just starting to think about. So like all things that are disruptive, if you get on top of this healthspan thing, it's going to create all kinds of other issues that we're going to have to deal with.

50:05That's why I think we just have to be a little bit more dynamic and take a bit more risk. So, you know, we've become very risk averse in this country. You know, I think we need to say, actually, why don't we have a go and see whether it'll work? Well, that's a wonderful note to end this on, Sir John. So thank you so much for joining us on Radical. It's been a real pleasure. Yeah, nice to talk.

50:34So Professor Sir John Bell has just left the studio. And one thing I found really, really interesting and has just changed how I think about all of this is that the previous wave of medical technology gains, as it were, were extending lives, but not always making those extra years healthy years. People were living longer, but a lot of those years were lived in poor health. that was not good for them. It was not good for the healthcare systems that had to spend huge amounts of time and money supporting them in those years. Whereas now we're looking between the breakthroughs and prevention in terms of the anti-obesity drugs, in addition to personalised medicine and that kind of thing.

51:14It feels like we're now talking about extra years, which will also be lived in good health. I think that's really quite remarkable. It's also worth, I think, taking a second to say that, you know, we always talk about radical change on this show, But there were also several things that Sir John said at certain points which you might have felt were quite radical. He touched on China, he touched on AI, he touched on the NHS, and all of those might not necessarily have sat well with yourselves. On China, a lot of people have concerns about its human rights record and whether we should work with a country where those sort of things are happening.

51:46On AI, there's the question, the related question of Palantir and its role in the NHS. This is obviously a topic and a story that has been covered in huge detail in the UK recently. There are a lot of people with a lot of concerns about what the downstream consequences of working with a firm like this might be. And on the NHS itself, obviously, a lot of you will have strong, positive feelings about the National Health Service. and therefore some of Sir John's suggestions and comments about how the NHS is currently run and can be done differently might not have sat comfortably with you. But probably, well surely the most striking thing from that conversation was that we had here one of the preeminent figures in this field who has been doing this stuff for decades and who says that in all the time he's been working on this he's not seen anything like what he thinks is only 10 years down the track which is that we could be on the brink of effectively curing a large portion of cancers.

52:47I just think that's astonishing. And I'm sure a lot of people listening today will have had a conversation at some point in their lives where they were told that someone they knew had cancer. And those conversations are always incredibly difficult and painful for everyone involved. And this idea that we might be only a decade away from a place where people find out they have cancer at such an early stage that it is a routine part of managing their health the treatment that they then have to undergo is routine is straightforward it's not intensive it's not dramatically changing their life worsening their quality of life that for me is just truly astonishing that the cure for cancer for all intents and purposes could be that close around the corner and look you know this is a program where we talk about radical change every week, but curing cancer in a decade?

53:41I mean, it doesn't get more radical than that, does it?

53:46That's it for this episode. To make sure you don't miss future conversations, you can subscribe to Radical on BBC Sounds. Thanks for having me. Goodbye.

54:02Treat it. Feel better. Then start all over again. That was my pattern for years. I kept dealing with the same symptoms, getting the same treatments, and ending up right back where I started. That's when I found Evie. Evie is an at-home vaginal microbiome test that analyzes over 700 bacteria and fungi from a single swab. It goes far beyond traditional testing that only checks a few things. When I used Evie, I finally saw patterns that had never been explained to me before. Then, a licensed clinician reviewed my I created a personalized prescription care plan based on my actual microbiome. And for the first time, I wasn't just reacting.

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From the publisher

This week, John Burn-Murdoch sits in for Amol to speak to Professor Sir John Bell, one of Britain’s leading medical scientists, about the huge (and often undiscussed) medical breakthroughs changing how we live, age and die. Medical advances have already added 12 years to average life expectancy in the UK in the last 50 years. But the next revolution may be even more radical: earlier cancer detection, personalised vaccines, obesity drugs, AI-driven prevention and treatments that could keep us healthier for longer. But with the science and technology moving this fast, can the health service, the economy, and the public keep up?

GET IN TOUCH    WhatsApp: 0330 123 9480  Email: radical@bbc.co.uk 

Episodes of Radical with Amol Rajan are released every Thursday and Monday. It was made by Rufus Gray and Oscar Pearson. Digital production was by Leona Gaspar. Technical production was by Stephen Bailey. The Senior News Editor is Sam Bonham.

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