Rhonda Patrick, Ph.D.
Promoting strategies to increase healthspan, well-being, cognitive and physical performance through deeper understandings of biology.
Dr. Satchin Panda on Circadian Insights into Exercise Timing, Melatonin Biology, and Peak Cognition
Dr. Satchidananda (Satchin) Panda is a professor in the Regulatory Biology Laboratory at the Salk Institute for Biological Studies. His work focuses on chronobiology, the study of the day-night cycles that drive the multifaceted activities of the human body, using genetic, genomic, and biochemical approaches. He is an expert on circadian rhythms and a pioneer in the field of time-restricted eating. A priority for Dr. Panda when designing his studies is to identify strategies that positively impact public health. Circadian rhythms, the body’s 24-hour cycles of biological, hormonal, and behavioral patterns, modulate a wide array of physiological processes, including the body’s production of hormones that regulate sleep, hunger, and metabolism, ultimately influencing body weight, performance, and susceptibility to disease. Circadian rhythmicity may have profound implications for human healthspan. When and how much we sleep, eat, or exercise (and these activities’ effects on our health) are intrinsically linked to our circadian rhythms. In this episode, Dr. Panda and I discuss... 05:31 - How circadian rhythms influence human health. 12:30 - How seeking bright light in the morning and avoiding it in the evening can help us sleep better. 20:40 - How the ability of supplemental melatonin to counteract evening bright light exposure varies. 26:16 - How understanding the relationship between melatonin and insulin secretion might help us decide when to eat. 33:15 - How shift work, jet lag, and modern lifestyles contribute to altered circadian rhythms and metabolic dysfunction. 45:10 - How naps might aid with afternoon sleepiness and sleep loss. 47:05 - How we can tailor our indoor lighting environment to promote healthy circadian rhythms. 51:20 - How time-restricted eating (eating within a narrow time range) can be beneficial. 01:02:13 - How Dr. Panda’s ongoing study uses a smartphone app to track when people eat. 01:03:41 - How most people are unaware of their eating patterns. 01:07:58 - How Dr. Panda incorporates his research findings into his own life. 01:16:21 - How our circadian rhythms dictate when we should exercise – and how caffeine provides a workaround. Read the full show notes to learn more: Sign up to receive Rhonda’s regular newsletter: Become a FMF Premium Member to receive exclusive podcasts, emails, and more:
Jul 5
1 hr 28 min
Dr. Michael Snyder on Continuous Glucose Monitoring and Deep Profiling for Personalized Medicine
Dr. Michael Snyder is the director for the Center for Genomics and Personalized Medicine at Stanford and a pioneer and advocate of "deep profiling." Deep profiling seeks to apply intelligent analysis to large data sets to yield specialized clinical insight, ranging from common consumer-grade wearables like Apple Watches to whole-body MRI, continuous glucose monitoring, and metabolomics. Chapters: 00:12:51 - Continuous glucose monitors 00:31:04 - Lyme disease 00:34:00 - Predicting illness with smartwatches 00:39:14 - Heart rate variability 00:40:41 - Exposome and airborne pollutants 00:51:04 - Discovering Ageotypes 00:58:05 - Exercise benefits 01:03:11 - Michael Snyder's lifestyle habits Get this show's notes, timeline, and transcript: Dr. Snyder's faculty bio page: Dr. Snyder on Twitter: COVID-19 Tracking Study: Free metabolism SNP report for consumer genetic data:
May 27
1 hr 15 min
Dr. Roger Seheult from MedCram on COVID-19 Vaccines, Vitamin D, and Heat Hydrotherapy
Dr. Roger Seheult is the co-creator of MedCram Videos. In the early days of the COVID-19 pandemic, MedCram emerged as a beacon of insight, providing continuing coverage and perspectives in an environment almost defined by information scarcity. What particularly excited me about the unique opportunity of this interview is that apart from Dr. Seheult being a unique voice of public scholarship during the early days of the pandemic, he's also a quadruple board-certified pulmonologist with deep experience working on the frontline of the COVID-19 pandemic. In other words, when it comes to COVID-19 for Dr. Seheult... it's personal. He has worked tirelessly not just to help people find their way back to wellness as a critical care provider, but he broadcasts the insights he has gained realtime to the 1 million subscribers listening to his medical lecture platform he co-founded with physician assistant Kyle Allred. Listen to this episode to hear Dr. Seheult's thoughts on: 00:06:20 - How MedCram Videos got started and the future of medical education from Dr. Seheult's standpoint. 00:09:37 - What to do when life is on the line and the usual hierarchy of evidence doesn't exist, as in early emergency COVID-19 treatment. 00:12:46 - The crucial differences in treating early vs. late-stage COVID-19 illness. 00:14:40 - How doctors would've treated COVID-19 one-hundred years ago. 00:18:13 - How increasing ventilation may powerfully impact COVID-19 disease transmission and why airplanes have surprisingly little disease transmission. 00:20:28 - How masks are virtually universally beneficial in the pandemic regardless of type. 00:21:32 - Vitamin D and COVID-19 00:22:22 - How the steroid chemical structure of vitamin D confers qualities on vitamin D that other vitamins ("vital amines") do not possess, such as membrane permeability that provides access to the nucleus and broad gene regulatory effects mediated by a specialized vitamin D receptor element. 00:23:24 - How calcium homeostasis, which was the early and exclusive focus for scientists and doctors that were trying to determine the ideal vitamin D levels, may have caused the RDA to be set too low since we now know vitamin D regulates around 5% of the protein-encoding genome and have much broader effects. 00:24:23 - How the hormonal role of vitamin D confers on it properties more similar to other hormones like testosterone and cortisol rather than those of ordinary vitamins. 00:26:21 - The surprising level of overlap between COVID-19 positivity and groups most affected by vitamin D deficiency and the surprise finding of how less than 50 ng/mL blood levels of vitamin D associated with greater likelihood of SARS-CoV-2 positivity in the hospital. 00:30:27 - How scientists are able to interrogate the effects of low vitamin D levels through genetic research, a type of study known as mendellian randomization. 00:34:20 - The gene regulatory effects of vitamin D and the implications for the scale of its biological impact. 00:35:49 - How Vitamin D's ACE2/renin-angiontensin-promoting effects may be mechanistically involved in the effects observed in vitamin D COVID-19 studies. 00:42:00 - Why ameliorating vitamin D deficiency in one large monthly bolus might be less effective than daily or weekly doses. 00:43:23 - How a prescription-only form of vitamin D known as Calcifediol might have an advantage in acute care for COVID-19. 00:47:06 - Why skin synthesis of vitamin D from UV B radiation can be extraordinarily unreliable when compared to supplementation. 00:53:43 - What the safest dose range for vitamin D is that should also address deficiency in most populations. 01:06:15 - The beneficial circadian effect of early morning sunlight. 01:07:38 - How sleep deprivation is meaningfully implicated in profound and immediate impairment of viral immunity. 01:12:08 - Dr. Seheult's suggestions for how to achieve the highest quality of sleep. 01:19:18 - How a century old sanitarium technique used during the Spanish flu era massively boosts interferon by up to ten-times using heat exposure. 01:22:38 - How genetic and antibody-induced failures of the interferon system underpin up to 14% of all severe cases of COVID-19 and why interferon is so vitally important for viral response. 01:26:43 - Why treating the symptoms of fever during the spanish flu turned out to not be a good idea, immunologically speaking. 01:31:58 - Dr. Seheult's on-going research into using hot hydrotherapy as a viral immunity booster. 01:47:00 - COVID-19 Vaccines Here's some web pages related to the show and this episode that we think you should check out... You can access the show's notes, timeline, and transcript here. Try out a preview of our premium podcast The Aliquot Preview. Learn about FoundMyFitness premium membership and our twice-per-month science news updates we send out just to members called the Science Digest.
Feb 26
2 hr 6 min
Dr. Steve Horvath on epigenetic aging to predict healthspan: the DNA PhenoAge and GrimAge clocks
Consistent patterns of age-based alterations in DNA methylation can be harnessed to estimate age, serving as a sort of "clock," the premise of which is truly remarkable: Predict a person's age (or even lifespan), based on chemical modifications to their DNA that reflect the biological life history of the organism. Dr. Steve Horvath has analyzed large data sets of DNA methylation profiles to derive an algorithm that accurately predicts a person's chronological age across multiple cells, tissues, and organs, and even mammalian species. He built on this algorithm to develop second-generation clocks that could predict time-to-death among people of the same chronological age, as well as lifespan and healthspan. In this episode, Dr. Steven Horvath describes epigenetic clocks and their role in predicting – and possibly slowing – aging. Get this show's notes, timeline, and transcript: Dr. Horvath's faculty bio page: Dr. Horvath's Wikipedia page: Dr. Rhonda Patrick's 3-minute video crash course in epigenetics: The FoundMyFitness overview article of epigenetic clocks:
Dec 22, 2020
1 hr 33 min
Q&A with Dr. Jed Fahey on Sulforaphane, Moringa and Chemoprotection
In this special two-hour Q&A episode with Dr. Jed Fahey, a world-leading expert on the science of chemoprotection and, in particular, sulforaphane, we discuss many of the listener-submitted questions from the hundreds of live event participants. Get the full timeline and show notes. Listen to learn Dr. Fahey's thoughts on… 00:07:19 - The minimum daily dose of sulforaphane that elicits beneficial health effects 00:12:04 - Why gauging the amount of sulforaphane in foods presents challenges 00:17:37 - Workarounds to enhance the sulforaphane in cooked foods 00:23:38 - How often to consume broccoli sprouts and how long their effects last 00:39:28 - The effects of sulforaphane on glutathione production in the brain 00:43:12 - The effects of sulforaphane on cancer 01:17:26 - Alternatives to sprouts, such as supplements (and which ones Dr. Fahey recommends) 01:33:08 - Safety concerns regarding sulforaphane In this episode, Dr. Fahey mentions the following companies, websites, and supplements: Brassica Protection Products Cullman Chemoprotection Center Crucera SGS® (Thorne) Oncoplex® (Xymogen) Avmacol® Vision Defense® (Swanson) MaxN-Fuze® MitoCORE® (Ortho Molecular Products) Extra resources Learn how to sprout at home safely by downloading the 15-page sprouting guide developed with Dr. Fahey. Sign-up to participate in the live every-single-month Q&A series by becoming a FoundMyFitness premium member.
Nov 16, 2020
1 hr 56 min
Dr. Giselle Petzinger on Exercise for Parkinson's Disease
Giselle Petzinger, MD, an associate professor of Neurology at the University of Southern California and today’s guest, studies the extensive effects of how different types of exercise, in particular skill-based exercise, can affect the clinical outcome for people with Parkinson’s disease. Dr. Petzinger's work focuses on understanding how to promote brain repair after injury, particularly in the context of Parkinson's disease. She is currently investigating ways to enhance neuroplasticity in a preclinical model of the disease. She has examined the role of exercise in Parkinson's disease, with emphasis on how different types of exercise affect distinct regions of the brain. Her work has implications for improving the quality of life of patients diagnosed with the neurological disorder — a condition for which there is no cure. In this episode, we discuss... 00:06:57 - What is Parkinson’s disease? 00:11:57 - How symptoms of Parkinson’s disease generally only appear when ~50% of dopamine-secreting neurons in substantia nigra are lost. 1 00:14:57 - How other circuits in the brain can compensate for the loss of function of the substantia nigra. 00:18:37 - Prevalence and hereditary risk factors of Parkinson’s disease. 00:21:25 - How epidemiological studies have linked increased Parkinson’s disease risk with exposure to pesticides, herbicides, solvents, and certain heavy metals such as manganese. 1 00:26:57 - How exercise can lower the risk of developing Parkinson’s disease. 1 2 3 00:35:38 - How skill-based exercise, such as yoga, Tai chi, boxing, tango or skateboarding may play a special role in ameliorating some of the effects of the disease by driving circuit-specific effects, by creating top-down cognitive challenge for skills involved in a patient's movement through space. 00:47:49 - How serum BDNF significantly increases in Parkinson’s patients after 1 month of treadmill exercise and why this might mean better cognitive function. 1 2 00:58:33 - How treadmill exercise with heart rate 80-85% maximum for at least 3x per week slowed the progression of Parkinson’s disease symptoms. 1 01:01:31 - Why exercise may not fully replace the use of medications. 01:09:58 - How the omega-3 fatty acid DHA has some preclinical evidence suggesting it may reduce motor-symptoms and dyskinesia in Parkinson’s disease. 1 2 3 4 01:12:12 - How patients with Parkinson’s disease have higher levels of inflammatory biomarkers and how this might contribute to the disease. 1 Click here to get this episode's show notes and transcript Get early access with the premium members early access podcast feed, monthly Q&A sessions, an exclusive bi-weekly science digest email, and more! Click here to get started.
Oct 14, 2020
1 hr 18 min
Aliquot #3: Q&A Mashup - Fasting
Get a sample of our new premium member's content, known as Aliquots, by listening to this in-depth Q&A mashup on Fasting. What's an aliquot, you may ask? Aliquots are special, curated segments prepared and distributed to premium members via the premium members podcast feed. This collection of clips covers a range of topics related to fasting, including associated mechanisms of healthspan and longevity, purported health benefits, and when and how to break the fast. Episode Highlights 00:01:36 - Fasting mimicking diet, the ketogenic diet and autoimmune diseases 00:13:42 - Spermidine is a fasting mimetic compound 00:16:51 - Aerobic exercises in a fasting state induces autophagy quicker than in a fed state. 00:25:15 - Intermittent fasting, prolonged fasting and healthspan. 00:28:02 - What we know about the minimal fasting time it takes to induce autophagy and apoptosis. 00:33:35 - Comparing and contrasting a ketogenic diet with prolonged fasting. 00:37:33 - Rhonda compares the rejuvenation effect of time-restricted eating vs prolonged fasting vs fasting mimicking diet. 00:41:16 - Rhonda's thoughts on coffee breaking a fast. 00:52:29 - Supplements and other medications outside of a time-restricted eating window. 01:01:28 - Differences between a fasting-mimicking diet vs a water-only fast. Learn more about our premium podcast feed The Aliquot by clicking here. Learn more about premium membership benefits by clicking here.
Sep 8, 2020
28 min
Aliquot #2: Q&A Mashup - Sauna
Get a sample of our new premium member's content, known as Aliquots, by listening to this in-depth Q&A mashup on Sauna use. What's an aliquot, you may ask? Aliquots are special, curated segments prepared and distributed to premium members via the premium members podcast feed. This collection of clips covers some of the many health benefits associated with sauna use, including heat shock protein activation, cardiovascular health, muscle mass preservation, and more. Episode Highlights 00:07:00 - What are the effects of sauna and hot baths on heat shock proteins and the immune system? 00:16:14 - What are your recommendations for infrared sauna temperature and time? 00:24:03 - At what temperature and how long do you need to stay in the sauna to activate heat shock proteins? 00:26:50 - Does sauna use promote excretion of heavy metals such as arsenic? 00:29:12 - Are there ways of mimicking sauna use without regular access to a sauna? 00:33:55 - If compounds such as metformin, resveratrol and vitamin E counteract exercise-induced hormesis, would this be true for other stressors such as the sauna, fasting, broccoli sprouts, polyphenols? 00:37:06 - How does fasting affect human growth hormone and IGF-1 in respect to muscle mass? 00:43:30 - Can saunas be used during fasting to preserve more muscle and increase fat burning? 00:45:50 - Can saunas be used to treat headaches? Learn more about our premium podcast feed The Aliquot by clicking here. Learn more about premium membership benefits by clicking here.
Sep 2, 2020
18 min
Aliquot #1: Q&A Mashup - Pregnancy and child development
Get a sample of our new premium member's content, known as Aliquots, by listening to this in-depth Q&A mashup on pregnancy and child development. What's an aliquot, you may ask? Aliquots are special, curated segments prepared and distributed to premium members via the premium members podcast feed. This particular collection of segments covers every single major discussion of pregnancy and child development spanning years of members-only Q&As. Just for a few examples, it covers... My pre-pregnancy regimen, including diet, exercise, vitamins and sleep Nutrition for babies and toddlers to maximize brain development and growth Extra precautions that I took during my pregnancy And much, much more! Learn more about our premium podcast feed The Aliquot by clicking here. Learn more about premium membership benefits by clicking here.
Aug 25, 2020
24 min
The Biology of Breast Milk
This episode aims to be the most comprehensive compendium on the biology of breast milk ever recorded. Looking at the converging clinical and animal evidence of the impact of breast milk paints a complex and beautiful mosaic of developmentally supportive effects that range from allowing the mother to act as a “compensatory” immune system to possibly supporting the development of entire organ systems through the integration of maternal stem cells found in breast milk. Episode Highlights 00:07:11 - Breast milk composition and production 00:09:59 - Human milk oligosaccharides in breast milk establish the infant gut microbiome 00:15:48 - Omega-3 fatty acids and other components in breast milk boost brain development 00:18:14 - Vitamins and minerals in breast milk 00:22:05 - Breast milk stem cells and multi-organ microchimerism 00:22:54 - Harmful substances transferred to infant via breast milk 00:28:03 - The effects of breastfeeding on the infant's immune system 00:31:17 - Effects on intelligence 00:34:36 - Breastfeeding as a benefit to maternal health Get our detailed summary, timeline, references and more on the FoundMyFitness episode page. Breastmilk and breast feeding is now a dedicated Topic section on the website. View that article by clicking here. Did you enjoy this episode? If you’re interested in learning more about this topic, check out a preview of our very first Aliquot episode: Aliquot #001: Pregnancy & Child Development. It features a compilation of pregnancy and child development-related topics taken from several Q&A episodes over the last couple of years. Click here to hear this preview of our premium podcast The Aliquot by clicking here now.
Aug 25, 2020
38 min
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