The Science Of Why Trauma Runs In Families | Dr. Mariel Buqué

27 Mar 2026 · 7 min · 2 chapters

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In short

Intergenerational (family-line) trauma—how trauma differs from personal trauma and how it can be transmitted biologically and through environment.

Guest

Dr. Mariel Buqué, who does family tree work/lineage exploration of trauma responses and attachment patterns.

Key claims

Intergenerational trauma sits at the intersection of nature and nurture, involving genetic transmission and epigenetics (stress/depression can alter gene expression). Example: A mother stressed during pregnancy (around five months gestation) may expose the fetus to cortisol; the fetus’s precursor sex cells can be affected, creating stress vulnerability that can carry forward.

Notable examples

Childhood difficulty being soothed, hyperactivity overlapping with ADHD, lifelong anxiety; insecure attachment from yelling/screaming modeled across generations; later triggers like bullying or a pandemic can reactivate vulnerability.

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

Chapters

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Understanding Intergenerational Trauma

0:37 to 3:02

Explore how generational trauma affects individuals biologically and socially.

“What's the difference between the traumas that happen to us and the generational trauma that happened to our ancestors?”

The Intersection of Nature and Nurture

3:02 to 5:34

Discuss the genetic and environmental factors contributing to trauma transmission.

“Now, is it genetic or is it, let's say the mother breaks a cycle before she heals her trauma, the generational trauma, before she has her child?”
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Transcript

Automatic transcript. May contain errors.

0:00Dr. Mariel Buqué:Walmart Express Delivery can get what you need delivered in as fast as an hour. Whether it's baby formula when you're down to the last scoop, pet food before the bowl runs empty, batteries for a dead remote, or a last-minute gift, it is handled. Try Walmart Express Delivery today and get free delivery with promo code EXPRESS. Promotion valid for first Express Delivery order. $50 minimum. Subject to availability. Restrictions apply. Hi, my name is Lewis Howes, and welcome to The Daily Motivation Show.

0:37What's the difference between the traumas that happen to us and the generational trauma that happened to our ancestors? So the major difference is placed in biology. So there's a genetic component to intergenerational trauma. And so intergenerational trauma has this way in which there is a genetic transmission that happens from parent to child. Really? And so it creates a predisposition to vulnerability to stress. Give me an example. What's a common example you see in your practice that is a generational story? Well, I mean, you know, there are people that will come in and say, you know, ever since I was a child, it was, like, difficult to soothe.

1:20And I was, you know, I had like this hyperactivity. There's a lot of trauma survivors that also like believe that their symptoms coincide with ADHD because there's a lot of overlap in the experience and in the symptomatology. So there's a lot of that. There's like people that, you know, reflect back to their childhood and they say like, I've always had like this experience that felt like I was always anxious. When we dig into the layers and we dig deep, we start noticing, okay, especially because I do a lot of like family tree work and like really going down the lineage to know like, well, what are some of the trauma responses or what are some of the responses around also like inflammatory responses like depression or anxiety or other kind of like mental illness, you know, kind of experiences that were held in the family.

2:09And when we start going down the family line and we start exploring not only their childhood and how they responded in their childhood, what their attachment patterns were in their childhood, but also how perhaps like their mother had an inner child wound and the mother's mother had an inner child. And they never healed it. Never healed it. Express it as a trauma response. Yelled and screamed in the home. You know, had like emotional outbursts. What did that do? that actually created a disruption in the attachment that you could have had, like in your childhood. It created an insecure attachment.

2:42You then went out into the world and experienced bullying, a pandemic, like all kinds of things. And then that trauma, that trauma, you know, propensity or vulnerability got triggered out. And so now you are continuing the cycle of intergenerational trauma because it was modeled to you. Genetically, it was passed down. And then, you know. Now, is it genetic or is it, let's say the mother breaks a cycle before she heals her trauma, the generational trauma, before she has her child? She can. And she creates an environment of peace, you know? Yeah. Is it the environment or is it the biology, the genetic code that is passed down?

3:28Because it's like these environments are kind of passed down. You witness your parents doing it, you just follow the pattern, and you follow the environment pattern. Is that genetic? Is that environment? What is both? It's both. It's like, you know, for as long as psychology has existed, we've had theories on nature-nurture. Darwinism also kind of just started that way back when. So nature being the biological aspects of our experiences, and then nurture being the social aspects of our experiences. and intergenerational trauma is really the only trauma that is situated at the intersection of both.

4:04So we have the nature side. Yeah. So, you know, on the nature side, the genetic expression, like we're getting a lot of information from like the field of epigenetics, which helps us understand how behavior like impacts genes. And so basically what happens is that let's say a mother, a mother has stress and depression in her life. Let's say that this mother is actually pregnant at five months gestation. So she's pregnant. She has a baby in utero. And because she's at five months gestation, that baby also has all the precursor sex cells that they're going to have for their lifetime,

4:40Dr. Mariel Buqué:regardless of whether it's male or female. They already have those. So the mother, she experienced chronic trauma her entire life. And so because that became the status quo, her genes re-expressed. So her genes said, okay, this is the way that things are. We are a stressed body. And so because her genes are now saying we are predisposed to stress, that's being handed down to the baby in utero, actually at conception. Wow. So the baby is conceived into genes that are predisposed to stress. And because she is already still stressed while she's having this baby, all those stress hormones, namely cortisol, those are being passed down to the baby in utero.

5:22And what's happening to the precursor cells. Those are also ingesting a lot of that stress environment. So you have three generations in one body. Wow. Genetically being passed down the stress vulnerability. But also the social piece, the mother's stress. You know, like she has all her things going on. She's predisposed to trauma. She's got all these things going while she's, you know, still pregnant. Her environment is still stressful, yeah. Yeah. And so everybody in that lineage of three generations in one body is experiencing stress.

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6:39Thank you so much for listening to today's episode of The Daily Motivation, and I hope you have an amazing rest of your day. If you enjoyed this episode, make sure to click the link in the description. that will take you to the full episode of our main podcast on the School of Greatness. And if you are loving the daily motivation, please follow us over on Apple Podcasts and Spotify and leave us a review over on Apple Podcasts right now. And if you want more exclusive content and ad-free listening experience, make sure to subscribe to our Greatness Plus channel on Apple Podcasts right now. And if you want to get even more inspiration from our world-class guests and learn how to improve your life and take it to the next level, then make sure to sign up for the Greatness newsletter and get it delivered right to your inbox over at greatness.com slash newsletter.

7:29Again, have an amazing day and I'll see you tomorrow with another episode of the Daily Motivation Show.

7:41Dr. Mariel Buqué:Walmart Express Delivery can get what you need delivered in as fast as an hour. Whether it's baby formula when you're down to the last scoop, pet food before the bowl runs empty, batteries for a dead remote, or a last-minute gift. It is handled. Try Walmart Express Delivery today and get free delivery with promo code EXPRESS. Promotion valid for first express delivery order. $50 minimum. Subject to availability. Restrictions apply.

From the publisher

Leave an Amazon Rating or Review for my New York Times Bestselling book, Make Money Easy!

Check out the full episode: https://greatness.lnk.to/1904DM

Dr. Mariel Buqué explains something that stops most people cold: generational trauma isn't just a pattern you witnessed. It's biological.

A stressed mother's genes literally reprogram themselves around that stress. Those repressed genes get handed to the baby at conception. And because a five-month-pregnant woman already carries her child's lifetime supply of sex cells, three generations are sharing that stress environment inside one body.

What felt like your anxiety may have started two generations before you were born.

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