Genetic Frontiers

Susanna Smith & Brandy Mello

A podcast about the promise, power, and perils of genetic information (geneticfrontiers.org)

  1. Sex Testing in Sports: Bias & the Science of Genetic Variation

    APR 21

    Sex Testing in Sports: Bias & the Science of Genetic Variation

    A conversation with Shoumita Dasgupta, PhD, a geneticist, anti-racism educator, and the author of Where Biology Ends and Bias Begins: Lessons on Belonging from Our DNA about transgender athletes in women's sports, the science of human genetic variation, and the relationship between our genetics and our sex, gender, race, and identity. EPISODE TRANSCRIPT  Susanna Smith Hi everyone. This is Genetic Frontiers. A podcast about the promise, power and perils of genetic information find us wherever podcasts are found and go to geneticfrontiers.org to join the conversation about how genetic discoveries are propelling new personalized medical treatments, but also posing ethical dilemmas and emotional quandaries. I'm your host, Susanna Smith. On today's episode, I will be talking with Dr. Shoumita Dasgupta, PhD, who is a Professor of Medicine and Assistant Dean for Diversity and Inclusion at Boston University. Professor Dasgupta is a geneticist by training, and she is an internationally recognized anti-racism educator and the author of a new book, Where Biology Ends and Bias Begins: Lessons on Belonging from Our DNA. In this book, Professor Dasgupta tackles a number of really big subjects, including the relationships we derive between our DNA and aspects of our identity, such as our race or ethnicity, our sex, gender, or sexual orientation and our understandings of genetic difference and disability. She digs into what is actually known about the inner workings of our bodies and our genetics versus the stories we, as humans, have created to make meaning of our DNA for ourselves. Many of the stories we tell ourselves are detached from the realities of what scientists have learned about human biology. Often these stories are laced with bias and grounded consciously or subconsciously in the idea that human beings can be categorized, organized, understood, and assigned value based on aspects of our biology. It's an overly simplistic idea, but it's foundational to how the United States was built, and how this country and many others continue to operate. What scientists have found over the last century is that human biology exists on a wide spectrum of diversity, plurality, and complexity that we are only now beginning to understand. Human beings aren't easily categorized or understood through their DNA. What Professor Dasgupta offers in Where Biology Ends and Bias Begins is a guide and a challenge to everyone who wants to dig into how our understanding—and misunderstandings—about human genetics shape how we see ourselves and other people. Thank you, Professor Dasgupta, for joining me today on Genetic Frontiers. Shoumita Dasgupta Thank you so much, Susanna. It's my pleasure to be here with you today. Susanna Smith So I want to start with a topic that is very much in the news and the political crossfire today, and has been a hot-button topic in the United States for a long time, which is transgender athletes in women's sports. In your book, you give a bit of history about how, before genetic testing, women athletes were made to parade themselves, their bodies were certain of their femaleness by viewing, and then only after were they allowed to compete in women's sports. Then in the early to mid-1980s, various forms of chromosomal analysis started to be used in athletics, and in some cases turned out unexpected results. And in the book, you write about a particular athlete, Maria José Martínez Patiño, who was the Spanish national champion in hurdles in the 1980s, and went on to compete internationally. Could you share a bit of Maria's story with our listeners? Shoumita Dasgupta Absolutely, I'd be delighted to. Maria José Martínez Patiño was a track and field athlete. And when she was competing, there were a variety of different sex-based tests that they did to determine eligibility of athletes. And so, in this testing, there was really a major conflation between sex and gender, so it's somewhat helpful to understand the difference between the two. Sex has to do with the biology of one's body. You know, what's in your DNA? What organs do you have? What sex hormones are circulating through your system? And it turns out that sex is typically assigned at birth, based entirely on external anatomy. So, this particular way of determining sex just really doesn't kind of capture the overall complexity of the spectrum of sex, and the fact that sex is not binary, it's not simply male or female, but there are many, many intersex people on the planet as well. Then there's gender. And gender has to do more with, you know, who you identify with in your heart and in your mind. Do you feel like a boy, a girl, a man, a woman, a mix, or none of the above? That has to do with what gender is. And sexual orientation is an entirely different category, which has to do with who you are attracted to and who you love. Now, in sport, there's a real fixation on binary categorization. The competitive categories tend to be men's sport and women's sport, which are gender designations, but the idea behind it is that there may be biological advantage to having been exposed to certain sex hormones, for instance, during development. So that's really to do with sex, not gender. When Maria José Martínez Patiño was competing, she had to go through these sex tests, many of which were focused on her chromosomal makeup. So what tends to typically happen is that males typically have XY chromosomes, and females typically have XX chromosomes. When she was first competing, she passed these tests and was given a certificate of femininity, as it was called at the time. But then when she went on to compete in a subsequent competition, she didn't have her certificate with her, so she had to go through a retest. The retest indicated that she did not have two X chromosomes, which is what the previous test had said. So her test had to be repeated. And this was, you know, kind of humiliating, or at least it called a lot of attention to her, and so she faked an injury to just kind of be out of the limelight while all of this was happening. Once the results came back, it actually showed that she had XY chromosomes, which are more typically associated with male development. If we dig deeper, though, what we found in the case of her own health was that she had androgen insensitivity syndrome. What that refers to is testosterone, which is an androgen, requires different kinds of biological components to elicit a response in human development. She didn't have those components, so she was not responsive to any testosterone in her system, even though she had XY sex chromosomes. Because she was unresponsive to testosterone, her body developed in the typical female fashion. She developed breasts and a vagina, and she identified as a woman in terms of her gender. Probably, if you really think about it, she was likely at a disadvantage compared to other women in her competitive category, and that's because testosterone is present in females and males. So typical females will have the ability to respond to testosterone, whereas she did not. So you could say that she was at a disadvantage. Nevertheless, because she didn't pass this repeat testing, it turns out that she was disqualified from further participation. That disqualification led to her losing her scholarship, her housing in the athletes' residences, her fiancé, her life just was completely blown up. And she, you know, to her credit, really took this as a call to action to work on behalf of other athletes who have different sorts of intersex characteristics and to really to fight and advocate for people to be able to compete in sport, regardless of, you know, kind of not fitting into the typical categorizations.   Susanna Smith So, I want to back up to something I understood from the book, which was that  Maria didn't have any questions about her sex or her gender when she walked into these competitions. And also just to clarify for our listeners, the testing Maria underwent to receive this certificate of femininity was applied to all female athletes, it wasn't because she was different. This was every female athlete underwent this testing. So could you just clarify that point? But also what did Maria know when she walked into these competitions? Shoumita Dasgupta That's a great question and a really important point. It's notable that they engaged in this sort of sex testing or gender testing, depending on their framing, only for women athletes. There's no similar process in place for men athletes. So this was already, you know, kind of a process that has misogyny baked into it. As you said, she didn't have any suspicion or reason to believe that she was anything other than a typical cisgender woman. These tests often will unearth facts about people's identity that they themselves were unaware of. When I said that sex is often assigned at birth. That really means that a lot of differences or variations in sex development are not actually identified until later on. Sometimes that can happen at puberty. Sometimes that can happen in the context of sport testing. Sometimes that can happen when people are trying to have children. So in Maria's case, you're right, she didn't know at all that this result was potentially in the cards.   Susanna Smith Yeah, and I think one important point to point out is sometimes that could never be identified, right? Like in Maria's case, it was identified because she was this elite athlete who had to undergo this testing or that's what the sport required. But there's a possibility you could walk through your entire life and not be aware that your chromosomes don't align with your sex identity or your gender. Shoumita Dasgupta  That's absolutely true. Another thing that is maybe worth thinking about is how common these intersex identities actually are in the population. Some estimates I've read place this at about 1.7% of the population, which is roughl

    50 min
  2. Episode 14: Medical Genetics & Eugenics: Two Sides of the Same Coin

    11/20/2025

    Episode 14: Medical Genetics & Eugenics: Two Sides of the Same Coin

    Nathaniel Comfort, PhD, author of The Science of Human Perfection: How Genes Became the Heart of American Medicine and a forthcoming biography on James Watson, talks about medical genetics and eugenics as "two sides of the same coin," and cautions that there is no simple, bright line between the two pursuits. KEY TOPICS Reading from The Science of Human Perfection: How Genes Became the Heart of American Medicine by Nathaniel Comfort, PhD How should clinicians and prospective parents think about the argument that there is no bright line between genetic interventions to relieve suffering v. human engineering or population improvement? What are the contingent problems created between distinguishing between genetic interventions for a fatal disease v. a non-fatal disease? How did the end of World War II and the dropping of the atomic bombs rejuvenate Americans' interest in science and genetic disease? How do we talk about genetics today in a way that embraces the actual complexity of the science? In the current moment of sea change, what is the cultural authority of science in the United States? Discussion of Dr. Comfort's new biography of James Watson, his enormous contributions to the field of human genetics and also his downfall. Check out this episode & all Genetic Frontiers episodes. Have a story about how genetic information has changed your life? We invite you to talk about it  through The TellMe Project.

    33 min
  3. Episode 12: Genetics & the American Far Right

    07/28/2025

    Episode 12: Genetics & the American Far Right

    Guest Alexandra Minna Stern, PhD, author of Proud Boys and the White Ethnostate talks about  how the American far right views genetics, genetic technologies, eugenics, and science and the emerging political threat of 21st century eugenics ideology and policies. Transcript Susanna Smith Hi everyone, I'm Susanna Smith.  This is Genetic Frontiers, a podcast about the promise, power, and perils of genetic information. Find us wherever podcasts are found and go to GeneticFrontiers.org to join the conversation about how genetic discoveries are propelling new, personalized medical treatments but also posing ethical dilemmas and emotional quandaries.  This season we're focusing on Genetics in American Politics & Culture. We talk with historians, journalists, technologists and philosophers about the alluring but dangerous pursuit of improving the human species through genetics. We discuss how ideas about people's genetic worth and worthiness are driving American politics and policy today. On today's episode, I will be talking with Dr. Alexandra Mina Stern. Dr. Stern is a professor of English and History and works at the Institute for Society and Genetics at UCLA. Professor Stern has spent her career researching and writing about the dark history of eugenics in the United States and elsewhere. Her work digs deep into how eugenic ideologies, past and present seek to categorize people, and assign them value. based on false ideas about biological or genetic superiority. The aim of these dangerous ideologies is to improve the human race by controlling who can and cannot have children.  Professor Stern was a guest on an earlier episode of Genetic Frontiers, Episode 6 about the eugenic origins of the genetic counseling profession. But today, we're going to retread some ground that Professor Stern covers in her book, Proud Boys & the White Ethnostate, which explores the culture of the American far right, including far-right views about genetics and eugenics. So thank you for coming back on Genetic Frontiers, Professor Stern. Alexandra Minna Stern Thank you for having me. So many of our listeners are genetic counselors or clinicians. Susanna Smith Can you talk a little bit about how the far right views genetics and genetic technologies?  Alexandra Minna Stern First of all, there is really a concern with demography, and as you have seen in the news, with baby making and a panic over fertility in the United States or lack thereof. And far-right leaders have really been endorsing pronatalism and the use of, not all of them, some of the pronatalists reject genetic technologies because they view them as unnatural, but a good number are what we would call, kind of like techno-utopians. And they want to create a world using genetic technologies such as IVF, genetic selection from embryos, and potentially even using information from GWAS studies and other types of large-scale genetic data to make decisions about their offspring and perfecting their own offspring. And that is an idea that they want to expand more generally to kind of solve the supposed crisis of depressed fertility in America. These conversations are happening in other countries as well where there are low fertility rates, but they've really taken off in the United States. For example, with the recent conference that happened at UT Austin, which was all focused on pronatalism and on using different reproductive and genetic technologies in the service of bolstering birth rates.  I'd like to note that, you know, the language that was used in that conference and that you will often read about in the media is one that kind of sidesteps the issue of race and tries to paint a picture of this as kind of more racially inclusive. But if you scratch the surface of people like the Collins family that's promoting this, or others who were at that conference, what you will find is that they are often referencing some of the more suspect literature that focuses on race and IQ scores. So, for example, Charles Murray and his ideas about race and IQ, or others, demographers or psychologists who have been discredited for really pushing unconfirmable ideas about the relationship between race, ethnicity, gender, and IQ. So that's one way in which we're seeing this techno-utopianism merging with the far right to really push forward ideas of what the future of America should look like. Another aspect of what's happening that really concerns me, when I think about the good work that so many genetic counselors are doing out there in the world and trying to be ethical and share the results of genetic tests with patients and clients, is that many of the products that are being used and have been created are becoming more and more unregulated. Now, in general, they have been less regulated in the United States than they have been in other countries, for example, you know, in Europe and so on. But what we're seeing now is, you know, with the push towards deregulation of so many aspects of health and environment under the Trump administration that it is more and more likely that it's going to become even a wilder west out there in terms of the deregulation and the ultra-commercialization of genetic tests and technologies. Such that it's just private individuals, so to speak, who are purchasing and using these technologies. Obviously, some individuals have the resources and the money to do so, and, you know, many others will not have that opportunity, which in and of itself creates a massive inequality in terms of access to more broadly, genetics as healthcare, genetics as kind of informing health decisions, and so on.  So that's another way in which I see this playing out, and it really concerns me because it means that genetic counselors or purveyors of genetic information, those who are working in, be it academic settings or, you know, public health settings, you know, potentially have less and less control over access to the services and the technologies that they're using. And I don't know what's going to happen with insurance and reimbursement, but that's a whole other area that I'm sure will be tested in the years to come. Susanna Smith  Yeah, I just want to pause there and explore this a little bit, because there was, of course, the executive order sort of expanding access to IVF. If you don't sort of sit in the Collins' camp of maybe the most extreme pronatalist pursuit, but for a genetic counselor perhaps someone just shows up and says, 'Well, I want to select my embryos; I want the smartest babies.' Can you talk a little bit about the history in American culture of trying to choose smarter children, and then the flip side, the science of what we know about the relationship of heredity and intelligence? Alexandra Minna Stern It is not proven that there is an association between genetics and intelligence, so that's one thing. I mean, there's no, like, hard and fast proof. What's more interesting, in a way, is that there has been a quest to determine that and to prove that for the past 100 plus years. So if you go back to the early eugenics movement, you know, one of the initial concerns of eugenicists was really to identify through looking at family studies, looking at pedigree charts, that there was a kind of causal relationship, not even a correlation, but a causal relationship that you could see being passed down from generation to generation, or perhaps skipping a generation due to recessive genes for traits such as intelligence and criminality.  And if we think back to the eugenics movement, one of the most popular terms that, you know, was also one that induced a lot of anxiety was the idea of "feeble-mindedness." And that was really connected to IQ. So, someone who had an IQ of less than 100 was viewed as less than normal, someone who had an IQ of 140 was viewed as potentially a genius. Those who had IQs that were in the lower ranges, anything below 80, according to Lewis Terman, who developed these scales, a label would be attached to them, such as, you know, not only "feeble-minded," but broken down even more, with more precision to "idiot," "moron," "imbecile," and so on. So, this idea that disability or, you know, cognitive defectiveness could be measured through genetics or looking at heredity has a long, long history. Then, of course, that was attached to gender, it was attached to race, but that kind of disability or concern or, like, the ableism that was at the heart of the eugenics movement is still very much with us today. That's something that does get underplayed in some of the media stories. At the same time, what's underlying all of it is really a very strong ableism, which, to me, I see throughout, whether it is an individual going to a genetic counselor saying, 'Look, I want to take the most up-to-date tests and get the best results, to have the best baby possible,' or something like the pronatalist movement with the Collinses, who are using all the technologies at their disposal to have superior babies. Ultimately, you know, the first criteria there is that the baby, the offspring will not be disabled. It will be physically, mentally, cognitively normal, if not superior. And so, the ableism underlying all of this, it's been at the root of eugenics from the beginning. And it is sitting at the core of the pronatalist movement today. And of the anxieties that potential parents bring into the genetic counselor's office when they want to come in and get tests.  And on some level, you know, we can understand that people want to have healthy children and healthy babies. We live in a culture where disability is so maligned and so misunderstood, and the spectrum of what is considered basically being a normal human being, or celebrating human variation is so restricted that…. It really is, I mean, I don't know what else to say about that but you get the point. Susanna Smith Yeah, and I agree. One of the things I want to jump in and

    37 min
  4. Episode 11: The Most Dangerous Thing Donald Trump Believes

    06/03/2025

    Episode 11: The Most Dangerous Thing Donald Trump Believes

    Part of Genetic Frontiers Season 2: Genetics in American Politics & Culture, Sue Currell, PhD, discusses the disturbing echoes of eugenic thinking in American politics today.  She calls eugenics "the backbone of political control and a progressive meritocracy," and argues that "grip of eugenic ideas on American politics today is a political failure to imagine a world where value is not profit." Visit geneticfrontiers.org to hear more episodes on the promise, power, and perils of genetic information.  KEY TOPICS Reading of excerpts from  "This May Be the Most Dangerous Thing Donald Trump Believes": Eugenic Populism and the American Body Politic. How should we understand the administration's agenda to "forge a society that is colorblind, merit-based, and only has two genders" in light of the eugenic history of the United States? How are you making sense of this focus on the gender binary, and whether it has a relationship to eugenic ideologies? From what you know about the history of efficiency in the United States, how are you thinking about the new Department of Government Efficiency? What is the story we're being fed by politicians? And what is the real story? How would you describe Trump's relationship to disability rights? Can you talk about the complicated histories of eugenics and abortion rights and how you think this is influencing America today? How do you think clinicians and scientists should be thinking about the role of science, in particular genetics, in America today? Read full transcript of this episode here.

    29 min
  5. Episode 10: Eugenic Thinking & The Race to Build AGI

    05/06/2025

    Episode 10: Eugenic Thinking & The Race to Build AGI

    Timnit Gebru, PhD, AI expert, advocate, and founder of the Distributed AI Research Institute (DAIR) and Émile P. Torres, PhD, a philosopher, discuss how eugenic ideologies are influencing Silicon Valley and driving the push for artificial general intelligence. They talk about how eugenic thinking pervades American culture, including Big Tech and medicine, and is foundational to the worldviews of some of the powerful people in the United States today.   KEY TOPICS Introduction to main idea of TESCREAL paper: the cultural push to develop artificial general intelligence is undergirded by eugenic thinking Dr. Timnit Gebru discusses her intellectual journey of tackling bias and discrimination in technology and  becoming a vocal critic of Big Tech Review of the core ideas of the philosophies in the TESCREAL bundle (Transhumanism, Extropianism, Singularitarianism, Cosmism, Rationalism, Effective Altruism, and Longtermism) Concrete examples of how TESCREALism is playing out in the United States today Why is it important to interrogate "the why" in our efforts to build artificial general intelligence? How does the TESCREAL framework serve as a jumping off point for taking a critical eye towards genetics and genomics research? Dr. Timnit Gebru & Dr. Émile P. Torres discuss their greatest fears about the future of eugenic thinking in American culture Thought experiment: how could knowing our likely date of death and cause of death from birth change our relationship to mortality?

    49 min
5
out of 5
7 Ratings

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A podcast about the promise, power, and perils of genetic information (geneticfrontiers.org)

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