Dr. Davis chats with leading scientists and medical experts in a wide range of health fields. It‘s like having a chat with your smartest friends about how science works, and how we can use it in our lives.
Making Sense of Nutrition Studies and Headlines (Dr. Deirdre Tobias)
Dr. Deirdre Tobias joins us to break down how nutrition research is done and how it's translated, or mis-translated, into health headlines.
The goal of this episode is to help you navigate flip-flopping nutrition headlines using practical tips and a basic understanding of nutrition research. Buckle up for a candid look at different types of studies, and a discussion of key concepts like causation, confounders and chance (p values).
Dr. Tobias is an epidemiologist who specializes in nutrition, obesity, and methods. She is an Assistant Professor in the Department of Nutrition at the Harvard TH Chan School of Public Health and at Brigham and Women's Hospital in Boston.
More from Dr. Deirdre Tobias at Harvard and on Twitter.
The Harvard Nutrition Source https://www.hsph.harvard.edu/nutritionsource/
Inside the World of Allergies (Dr. Samira Jeimy)
Dive into the world of allergies with Dr. Samira Jeimy, an allergist and clinical immunologist. In her day job, Dr. Jeimy helps families prevent and manage all sorts of allergies, from drugs and vaccines, to chronic hives, to common foods allergens like peanuts and milk. On the side, she posts science-based tidbits on social media to help the public understand what allergies are, and what they are not.
In this episode we discuss:
Biology: What causes allergies? What happens inside an allergic person?
Prevention: How can we prevent allergies allergies? Should potential allergens, like peanuts, be introduced early (spoiler, yes!).
Testing: How do allergists tests for allergies? Which allergy tests are NOT validated, yet commonly sold to the public?
Myths and misconceptions: How is the term allergy often misused?
Awareness: How can all of us practice allergy awareness?
Dr. Jeimy is assistant professor and program Director for the Division of Clinical Immunology and Allergy at Western University, in Ontario, Canada.
Dr. Samira Jeimy at Western University
Dr. Samira Jeimy on social: Homepage/Instagram/Twitter
The Canadian Society of Allergy and Clinical Immunology
Du Toit, 2015. Randomized Trial of Peanut Consumption in Infants at Risk for Peanut Allergy
Hormone Health: Science vs Misinformation (Dr. Eve Bloomgarden)
Learn about the science of hormone health with Dr. Eve Bloomgarden, a board-certified endocrinologist and misinformation slayer.
Dr. Bloomgarden has expertise in thyroid health, pituitary disorders, and metabolic bone disease and has been working as a physician and educator for nearly a decade at Northwestern University. She will soon be transitioning to Director of Thyroid at the NorthShore University HealthSystem.
This episode covers a lot of ground, from what hormones are, to the definition of hormone health, to how our hormones change, from minute to minute and throughout our lives. Dr. Bloomgarden also shares valuable advice on what NOT to buy. She explains why it's vital to proceed with great caution when it comes to unregulated supplements and tests.
Dr. Bloomgarden is also a passionate science communicator who plays a leadership role in two science outreach non-profits, IMPACT, a volunteer coalition of healthcare professionals centered in Chicago and the Women in Medicine Summit.
Dr. Bloomgarden on Twitter, Instagram and Facebook
Dr. Bloomgarden at Northwestern University
Pontzer, 2021. Daily energy expenditure through the human life course
Nature vs Nurture: Learning From Twin Studies (Dr. Nancy Segal)
Learn about the roles of nature and nurture in shaping our lives, with Dr. Nancy Segal, a leading expert in twin studies.
Nancy Segal, PhD, is Professor of Psychology at California State University, Fullerton and Director of the Twin Studies Center. She has authored over 250 scientific articles and six books on twins and twin development. She is also a twin herself.
Dr. Segal chats with host Dr. Chana Davis (a geneticist, and mother of twins) about how twins are studied, and what we have learned about the roles of genes and environment on height, intelligence, personality and more. They also share personal reflections on how we can apply this knowledge to the way we live, parent, and think about ourselves.
Dr. Segal also shares a preview of her latest book, entitled Deliberately Divided: Inside the Controversial Study of Twins and Triplets Adopted Apart.
Dr. Segal's website and books: https://www.drnancysegaltwins.org
Dr. Segal's faculty profile at Cal State Fullerton
International Society of Genetic Genealogy Wiki
Meta-analysis of the heritability of human traits based on fifty years of twin studies (Polderman et al, 2015)
Identical twins carry a persistent epigenetic signature of early genome programming (van Dongen et al, 2021)
Making Meat From Plants at Impossible Foods (Dr. Sue Klapholz)
Learn about making meat from plants from Dr. Sue Klapholz, VP of Nutrition & Health at Impossible Foods. Impossible makes plant-based foods designed to replace animal meat, including the shockingly realistic Impossible Burger.
Dr. Klapholz has had a diverse career as a doctor, scientist, teacher, editor and writer. In this conversation she shares the inside scoop on:
- How Impossible Foods creates "meat" from plants
- Similarities and differences between proteins from plants and animals
- How protein quality is measured
- Why and how food manufacturers use microbes to produce ingredients
- Why the word "processed" need not be a dirty word
- The impacts of animal agriculture on the planet
Disclosure: I have a personal connection - but no financial connection - to Impossible Foods. I did my PhD in genetics at Stanford in the lab of Impossible's founder, Dr. Pat Brown. The company was launched in 2011, five years after I graduated. I'm grateful to know both Pat Brown and Sue Klapholz personally.
Bio for Dr. Sue Klapholz
Impossible Foods blog on Medium
Safety Evaluation of Soy Leghemoglobin Protein Preparation Derived From Pichia pastoris, Intended for Use as a Flavor Catalyst in Plant-Based Meat
Assessment of the potential allergenicity and toxicity of Pichia proteins in a
novel leghemoglobin preparation
A metabolomics comparison of plant-based meat and grass-fed meat indicates large nutritional differences despite comparable Nutrition Facts panels
Perspective: The Public Health Case for Modernizing the Definition of Protein Quality
Dietary protein quality evaluation in human nutrition
COVID-19 in Kids: Vaccine Benefits & Risks (Dr. Janine McCready)
Dr. Janine McCready, an infectious disease physician, joins Dr. Chana Davis to talk about COVID-19 and kids. They discuss the impact of COVID-19 on kids and the rest of society, and share their thoughts on vaccinating their own young children.
Dr. McCready treats patients at the Michael Garron Hospital (MGH) in Toronto and has been supporting schools and childcare centres in East Toronto throughout the pandemic. She is also Director of the Antimicrobial Stewardship Program and Associate Director of Infection Prevention and Control at MGH.
Some of the questions covered include:
- How can I tell if my kid has COVID-19?
- Which kids are at higher risk of severe COVID-19?
- Do healthy kids need to worry too?
- What role do kids play in spreading COVID-19 to others?
- How do the risks associated with vaccines for kids stack up against the burden of COVID-19 infections? Short term? Long term?
Note: This episode was recorded in October 2021, when COVID-19 vaccine trials in kids (5-11) were completed but had not yet been approved and rolled out.
Characteristics of children admitted to hospital with acute SARS-CoV-2 infection in Canada in 2020
Predicting SARS-CoV-2 infections for children and youth with single symptom screening
COVID-19 resource for the public:
ScienceUpFirst - fighting misinformation with digestible science on social media
Health Canada COVID-19 resources
Public Health Ontario COVID-19 resources
More from Dr. McCready:
Dr. McCready at the Micheal Garron Hospital
Dr. McCready on Twitter
Very insightful discussions with experts
A unique chance to listen to top researchers and experts in their fields. The host is enthusiastic about sharing her passion for health and the scientific thought process with her audience. She does an excellent job of preparing the discussions with careful research and addressing the most common concerns, questions and objections one hears about. Highly recommended!
This is a must listen for anybody who wants the straight facts without an agenda. Highly recommended
I liked the focus on ways of communicating science in an accessible way to people scientific background, which is also respectful of people’s views.