Found My Fitness Podcast
Promoting strategies to increase healthspan, well-being, cognitive and physical performance through deeper understandings of biology.
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Gordon Lithgow, Ph.D. on Protein Aggregation, Iron Overload & the Search for Longevity Compounds
Tue, Apr 04, 2017
Dr. Gordon Lithgow of the Buck Institute for Research on Aging tells us about worms! Well, more accurately, his lab does research on nematodes, particularly an animal known as C. elegans.
This unassuming scientific model has a lot of important advantages for science: they can be frozen and subsequently thawed and retain viability, they are extremely well understood down to the precise number of cells in their body and the wiring of their nervous system, known as the connectome. Additionally, they have a short lifespan and are cheap to work with. Why would that be advantageous, you may ask?
This is where Dr. Lithgow's work on the Caenorhabditis Intervention Testing Program comes in. Short-lived organisms give Dr. Lithgow and his colleagues the opportunity to see how their biology responds to compounds in different contexts and to do so cheaply and rapidly. Think a vitamin, pharmaceutical or one of any number of other compounds may have a broad effect on longevity? Try it on Caenorhabditis first! Taking this approach allows the broad screening of compounds that might not otherwise get its chance in the limelight if science were limited to only working with rodents, for example.
But what could nematodes possibly have in common with us? The answer to the question is... gene homology! In fact, around 35% of C. elegans genes have a corresponding human version.
In this over 40-minute long conversation with professor Dr. Gordon Lithgow, we talk about...
- Nematodes... especially C. elegans, of course!
- The synergistic way in which research in lower organisms (C. elegans in this case) works together with rodent research to better understand the biology of aging and identify potential therapeutics.
- The story behind the Caenorhabditis Intervention Testing Program, a multi-institutional effort using the advantages of C. elegans short lifespan to screen for potential compounds that may increase lifespan. We also discuss the more expensive-but-closer-to-humans version of this program known just the Intervention Testing Program.
- The various qualities of C. elegans, especially as related to science's deep knowledge of the organism, that make it a perfect fit for this type of research.
- Some of the early experiences that actually lead to my early interest in the aging field and how it actually holds a bit in common with Gordon's story today.
- The role of protein aggregation as a possible fundamental mechanism of aging... even beyond its more established role in neurodegenerative diseases.
- Some of the fascinating research surrounding mild heat stress as a means to increase lifespan in lower organisms.
- Some of Gordon's research into the effects of metal accumulation, particularly iron, on aging in lower organisms and how, in humans, it may be important to approach the intake of these minerals with care.
- The interplay between genes that influence iron-binding and the development of Alzheimer's disease.
- Some of Gordon's research into the (perhaps surprising) effect of vitamin D on aging in C. elegans and, particularly, on the solubility of proteins... the loss of which is a feature of aging of particular interest.
- The critical involvement of the Nrf2 stress-response pathway in conferring benefits of vitamin D in worms... a pathway many of you may know about from previous discussions of sulforaphane, a robust activator of Nrf2 in humans.
- Some of the challenges encountered with ensuring standardization of protocols across all of the participating labs in the Caenorhabditis Intervention Testing Program.
- The amazing genetic diversity represented in soil-dwelling nematodes and how this is also an advantage in longevity research.
- The interesting possibility that certain compounds may have a different overall effect on lifespan or healthspan that is dependent within certain contexts (e.g. environmentally stressed or not).
Learn more about Dr. Gordon Lithgow.
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Have you done a 23andMe genetic test? Download File - 37.4 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
You can learn more about whether you have some of the specific polymorphisms discussed in this podcast, including ones related to the hemochromatosis and transferrin genes, by clicking here.
Refined Sugar and Its Effects on Mortality, the Brain, Cancer, Hormones & More
Thu, Mar 16, 2017
If you're anything like me, having the facts straight can sometimes help you to push through the tough part of building new habits or breaking old bad ones. This podcast talks about the realities about what the science says surrounding the consumption of refined sugar.
Some of the facts may surprise you! We talk about the relationship of consumption of refined sugar with...
- mortality and aging
- brain function, memory, and neuroinflammation
- the development of cancer and expression of oncogenes
- sex hormones
... and, of special relevance, if you're hoping to cut out a soda habit, the real addictive properties of refined sugar consumption that mirror that of more well-known drugs of abuse.
Enjoyed this episode?
Learn how to support the podcast by visiting our crowdsponsor page.
Studies mentioned in podcast: Download File - 12.7 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
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Does Saturated Fat Cause Heart Disease?
Fri, Feb 10, 2017
Today we try to answer or at least explore a big question in the world of health: does saturated fat cause heart disease?
This is not an unreasonable concern given the fact that there have been several associative studies that have found a link between saturated fat and heart disease, which is, no doubt, a fat that we find abundantly in the typical American diet since it is richly found in staples like fatty beef, pork, butter, cheese, and other dairy products.
And if you're in the United States and you're not at least a little concerned about heart disease, you may be asleep at the wheel since it's currently our leading cause of death.
Studies mentioned in this episode:
Genetics resources: Download File - 19.7 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Does Meat Consumption Cause Cancer?
Sat, Jan 28, 2017
Does meat consumption cause cancer? Or, put another way… does avoiding meat help prevent cancer?
If you aren't already savvy to the topic, this may sound more absurd than it should. Here's why: there have been many, many, many correlative studies that have found that higher meat consumption is associated with a significantly higher risk of cancer and cancer mortality.
To try to answer this question we end up going deep into discussing plausible mechanisms that might help explain this phenomenon and, indeed, discussing a little bit of cancer biology as well.
Some of the publications mentioned in this podcast:
Download File - 12.2 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
On Depression and Its Underlying Causes
Wed, Jan 25, 2017
The World Health Organization estimates that more than 350 million individuals of all ages have depression and approximately one-third of all patients with depression fail to respond to conventional antidepressant therapies like SSRI’s.
The good news is that today, perhaps more than ever, good science is starting to illuminate some of the underlying biological mechanisms surrounding the development of depression. This new understanding may soon help the clinical world develop new approaches to treatment that may be vastly more effective and for a greater number of people than the traditional approaches.
Publications mentioned: Download File - 12.2 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Roland Griffiths, Ph.D. on Psilocybin, Psychedelic Therapies & Mystical Experiences
Thu, Jan 19, 2017
Dr. Roland R. Griffiths is a clinical pharmacologist at Johns Hopkins and has been researching mood-altering compounds for over 40 years. As an unusually prolific scientist, having published over 360-times, he's also responsible for having started the psilocybin research program at Johns Hopkins nearly 2 decades ago.
In this 1-hour and 15-minute podcast, we discuss…
- 00:01:03 - the broader story of Dr. Griffiths 40 years of mood-altering drug research, including what got him started and how taking up a meditation practice ultimately influenced the eventual focuses of his research.
- 00:02:22 - the effect psilocybin has had in clinical trials in eliciting so-called mystical experiences that can act as a long-term catalyst for meaningful spiritual change and is amenable to being reproduced and clinically studied in a prospective manner.
- 00:03:45 - what distinguishes psilocybin from other drugs, particularly when reflecting backward on the experience months afterward.
- 00:05:11 - the process by which Dr. Griffiths and his team create an appropriate “setting” and facilitate feelings of safety for those participating in his trials.
- 00:06:42 - the elusive fundamental nature of a classical psychedelic experience whereby people often simultaneously describe the experience as ineffable (indescribable) but yet also often assign it a truth value that may even exceed that of everyday consensus reality.
- 00:07:36 - a description of the core features of a classical mystical experience that overlap with those found in a mystical experience induced by psilocybin.
- 00:08:58 - the qualities of the experience that Dr. Griffiths believes to most underlie the “reorganizational” potential it can have.
- 00:10:55 - the interesting potential areas for scientific exploration that the reproducibility of the psilocybin experience makes the substance amenable to.
- 00:11:25 - the promise psilocybin has shown as an effective therapeutic for anxiety and depression in patients with life-threatening cancer and also treatment-resistant depression in otherwise healthy patients (00:18:46).
- 00:13:04 - the lack of rigor in the very early trials on these compounds and the way in which cultural stigma surrounding psychedelic drugs ultimately played a role in impeding real, substantive clinical research for decades afterward.
- 00:16:31 - the long-term resilience of the antidepressant and anxiolytic effect, lasting six months and possibly even longer.
- 00:21:01 - the effect psilocybin has demonstrated in animal studies to increase hippocampal neurogenesis and enhance extinction of trace fear conditioning.
- 00:23:07 - the somewhat unintuitive neurobiological mechanism that may tie together some of the antidepressant properties of both psilocybin and ketamine, an anesthetic currently being studied as a rapid-onset antidepressant.
- 00:25:16 - whether or not the mystical subjective experiences are necessary for drugs like psilocybin to exert their antidepressant or anxiolytic effects.
- 00:26:43 - what the default mode network is and what its pattern of activity is in depression, long-term meditators, and after the acute use of psilocybin.
- 00:32:16 - the hard problem of consciousness.
- 00:37:26 - the challenge of finding the neurological correlates to match the phenomenology of individual’s subjective experiences.
- 00:38:16 - the promise psilocybin has shown in a small trial on smoking cessation where 60% of the treatment group were still abstinent a year afterward and plans Dr. Griffiths has to expand this area of research
- 00:41:10 - the possibility that the “reorganizational nature” of these experiences may open up new avenues as trials continue to try to embed the experience within different therapeutic contexts.
- 00:44:02 - the roadmap to FDA approval for use of psilocybin as a medication, particularly in the context of cancer-associated depression and anxiety.
- 00:45:05 - the risks inherent in taking psilocybin and the frequency of self-reported negative experiences in the general population.
- 00:47:22 - the criteria Dr. Griffiths and his colleagues use when screening for volunteers to participate in his studies involving psilocybin.
- 00:49:21 - the inability for clinicians to predict who is at risk of having challenging experiences defined by fear and anxiety (“bad trip”) and whether or not it is desirable, in terms of achieving a therapeutic outcome, to prevent these types of experiences altogether or not.
- 00:51:43 - the sort of dosages used in the trials.
- 00:54:45 - the clever ways devised by Dr. Griffiths to placebo control trials where expectation itself can affect outcome.
- 00:57:45 - some of the interesting anecdotes gleaned from Dr. Griffiths’ working with long-term meditators participating in the psilocybin trial.
- 01:05:13 - a brief discussion about some of the other psychedelics besides psilocybin, such as salvia divinorum and DMT (at 01:10:24).
- 01:12:08 - the historical indigenous use of psychedelics in various cultures spread throughout the world.
Watch this as a video on YouTube. Download File - 62.6 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Jed Fahey, Sc.D. on Isothiocyanates, the Nrf2 Pathway, Moringa & Sulforaphane Supplementation
Fri, Jan 06, 2017
Dr. Jed Fahey is a multi-decade veteran of isothiocyanate research and is the director of the Cullman Chemoprotection Center at Johns Hopkins University.
Much of this conversation, as you might expect given Dr. Fahey's pedigree as a research scientist, is focused on isothiocyanates and, indeed, sulforaphane!
While we covered quite a lot on this very topic (isothiocyanates) via my solo podcast a few weeks ago, this covers everything that may have been overlooked.... and, indeed, so much more! Skip to the timeline below for a sampling.
Dr. Fahey and his colleagues have been, in a big way, at the absolute center of what is a staggering amount of research on these very powerful compounds.
There is hardly a topic which we can discuss in which he doesn't have an anecdote about a study he was involved in, or, in some cases, tribal knowledge that may not even be published but is nonetheless interesting and an important part of the story that is unique to his particular vantage point.
In this 2-hour and 30-minute interview, we discuss...
- 00:00:00 - the early history of sulforaphane research, including key initial discoveries.
- 00:00:37 - the serendipitous unfolding of events that lead to the converging of the research on the NRF2 stress response pathway with the sulforaphane-related research going on at the same institute Johns Hopkins.
- 00:05:06 - why cruciferous vegetables bother to create isothiocyanates in the first place.
- 00:07:26 - the involvement of the heat shock proteins, in addition to the increased activity of Nrf2, as an additional cellular response mechanism that's been observed in association with sulforaphane.
- 00:08:11 - how sulforaphane affects a diverse array of biochemical processes from glutathione synthesis to elimination of reactive oxygen species and detoxification of harmful compounds, including carcinogens.
- 00:15:01 - whether or not to cook your cruciferous vegetables.
- 00:15:34 - the epidemiological (associative) evidence that cruciferous vegetable consumption may help reduce the risk of cancer.
- 00:18:30 - the extremely unpredictable nature of endogenous conversion of glucorapahanin (the precursor) into sulforaphane between person to person.
- 00:22:14 - practical information surrounding supplementation of sulforaphane.
- 00:27:05 - the effect one particular french sulforaphane supplement had on the doubling rate of PSA, which is a marker for prostate cancer recurrence in prostate cancer patients.
- 00:28:17 - the role that the Cullman Chemoprotection Center at Johns Hopkins has played, in addition to fundamental research, in providing early, vital infrastructure enabling some of the efforts of the international research community in elucidating the effects of sulforaphane and related compounds and the underlying biological pathways.
- 00:28:26 - the incredible, almost geometric growth in new studies that has occurred since the advent of a few of the key discoveries about sulforaphane and its method of action.
- 00:32:48 - the practicality of probiotics as a way to improve endogenous myrosinase activity needed to convert the precursor to sulforaphane into the bioactive sulforaphane.
- 00:33:26 - the involvement of our gut bacteria in our ability to convert the precursor of sulforaphane into its active form.
- 00:37:13 - whether or not endogenous myrosinase activity improves as a function of repeated challenge with glucoraphanin (the precursor to sulforaphane).
- 00:39:30 - why probiotics may vary in their degree of efficacy.
- 00:43:00 - why consuming isothiocyanates to reduce the number of bacterial colonies of h. pylori, a risk factor for peptic ulcers and stomach cancer, may turn out to be a better intervention than complete eradication of the species with antibiotics.
- 00:47:21 - the bizarre relationship h. pylori has with childhood asthma, where it has been shown that having some h. pylori seems to reduce asthma incidence in childhood.
- 00:52:28 - the effect sulforaphane has on inflammation and why inflammation is often a great therapeutic target for many different diseases, including diseases of aging.
- 00:54:05 - the life extension properties broccoli has been shown to have in an insect model of aging.
- 00:59:27 - the underlying causes of Hutchinson-Gilford progeria and the promise sulforaphane may hold for this disease of rapid aging.
- 01:09:00 - the effects of sulforaphane or Nrf2 activation on diseases of the brain, such as autism (human evidence) and Alzheimer's (animal evidence), possibly through anti-oxidative or anti-inflammatory effects.
- 01:11:09 - the so-called autistic fever response whereby autistic patients report a sudden reversal of symptoms during brief periods of fever.
- 01:10:05 - the role heat shock proteins might play more broadly in the prevention of certain neurological diseases.
- 01:19:00 - the challenges inherent in clinical trials where scientists may be extremely optimistic about the effects that might be observed, but still have to exercise caution and choose trial conditions that may be conservative, for the good of the people whose lives and hopes hang in the balance.
- 01:27:01 - the role of inflammation and depression and what some studies on animals have demonstrated in terms of sulforaphane's potential as an antidepressant.
- 01:42:30 - a special isothiocyanate-containing plant known as Moringa or sometimes referred to as the drumstick tree or the horseradish tree.
- 01:46:32 - Dr. Fahey's inadvertent foray into the consumption of exotic meats during a visit to Africa.
- 01:51:15 - a compound commonly associated with broccoli: indole-3-carbinol and its downstream product diindolylmethane (DIIM).
- 01:57:00 - the practicality of using mustard seed powder as an extra source of myrosinase, possibly for your cooked cruciferous vegetables.
- 02:00:13 - whether or not it makes sense to freeze broccoli sprouts in order to extend their shelf life, and possibly even increase sulforaphane within certain contexts.
- 02:05:25 - Dr. Fahey's thoughts on where endogenous conversion of glucoraphanin occurs in the body, as well as how long it takes before sulforaphane metabolites hit the bloodstream after ingestion.
- 02:07:25 - Some general thoughts on frequency in terms of how often one might need to take sulforaphane to elicit its biological effects.
- 02:12:16 - why sulforaphane may one day be a component of sunscreen.
- 02:12:31 - what some of the upcoming trials involving sulforaphane are at the Cullman Chemoprotection Center.
- 02:17:07 - the incredible way in which a sulforaphane-rich broccoli sprout beverage was shown to dramatically enhance the detoxification of benzene through excretion: one study showed up to 61% starting immediately after supplementation.
You can find out more about Dr. Fahey and the Cullman Chemoprotection Center by visiting: Download File - 122.2 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Sulforaphane and Its Effects on Cancer, Mortality, Aging, Brain and Behavior, Heart Disease & More
Mon, Dec 12, 2016
This podcast is about one of the most important biological pathways you could possibly take the time to learn about: the NRF2 pathway.
The most potent naturally-occurring inducer of this pathway, a plant compound known as sulforaphane, may be one of the most potent health-enhancing compounds at our disposal and yet... no one is keeping it out of your hands! No $1,000 per pill markup is keeping it out of your hands -- it’s available to anyone willing to take the little bit of time it takes each week to produce broccoli sprouts.
In some respects, broccoli sprouts may even be a great equalizer in a way... while it’s true that healthy food can often be expensive, it’s even reasonably possible for a person to take $20 worth of seeds and feed their whole family some of the most healthful greens you could get your hands on. This video will tell you why.
Here are a few of the more salient points surrounding sulforaphane that are discussed in this podcast...
- Profound changes in lipid biomarkers, reducing heart disease risk by as much as 50% in humans.
- Massive reductions in cancer risk in humans and also highly effective as a cancer intervention, particularly prostate and breast but also many others.
- Steep reductions in inflammation in humans.
- Shown in mice to be as effective as prozac as an anti-depressant.
- Steep behavioral changes in humans with respect to certain neurological disorders, such as autism.
- Causes dramatic boosts in the excretion of air pollutants (up to 60%) in humans.
Key sections you may want to skip to:
00:03:35 - Cancer and mortality
00:21:56 - Aging
00:29:37 - Brain and behavior
00:41:33 - Final recap
00:44:18 - Dose
NOTE: If you enjoy this podcast, you'll enjoy the YouTube video more since it shows all of the figures and citations.
Download File - 41.9 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Valter Longo, Ph.D. on the Fasting-Mimicking Diet & Fasting for Longevity, Cancer & Multiple Sclerosis
Fri, Sep 30, 2016
This episode of the FoundMyFitness podcast features Dr. Valter Longo, a professor of gerontology and biological sciences and director of the longevity institute at the University of Southern California. Dr. Longo has made huge contributions to the field of aging, including the role of fasting and diet in longevity and healthspan in humans as well as metabolic fasting therapies for the treatment of human diseases.
In this podcast, Valter and I discuss...
- The effects of prolonged fasting, which refers to 2-3 day fasting intervals in mice and 4-5 days in humans.
- Dr. Longo’s work on the fasting-mimicking diet, which is 5 day restricted diet that is meant to simulate some of the biological effects of prolonged fasting while still allowing some food.
- How clinical trials have demonstrated efficacy for this diet for type 2 diabetes, multiple sclerosis, and cancer patients.
- Fasting as an inducer of differential stre?ss resistance, where it can simultaneously make cancer cells more sensitive to death while also making healthy cells more resistant to these same death stimuli (such as chemotherapy) which might otherwise induce cell death amongst healthy cells as collateral damage.
- Fasting as a biological state which humans historically experienced with extreme regularity and we may ultimately need in order to mitigate various disease states.
- The effects of prolonged fasting on the immune system, namely, how it clears away damaged white blood cells via autophagy and how this causes hematopoietic stem cells to self renew and make more stem cells and also produce new blood cells to fully replenish the white blood cell population.
- How prolonged fasting causes a shift in the immune cell population towards one that is more representative of youth by normalizing the ratio of myeloid cells to lymphoid cells.
- The positive effects of prolonged fasting and the fasting-mimicking diet on markers of systemic inflammation, blood glucose levels and other aging biomarkers.
- The conclusions of Dr. Longo & Dr. Marcus Bock’s research comparing 1 week of the fasting-mimicking diet followed by 6 months of mediterranean diet to six months of a ketogenic diet in people with multiple sclerosis.
- The strange, somewhat paradoxical role of autophagy genes in cancer progression and some of the open questions surrounding the exact role that these genes are playing.
- Dr. Longo’s high level thoughts on metformin as an anti-aging drug.
- How the growth hormone/IGF-1 axis is one of the most important genetic pathways in aging from yeast to worms to mice to humans.
You can learn more about the fasting-mimicking diet by visiting prolonfmd.com and you can receive an email when Dr. Longo published his upcoming book (English version) by following his profile on Amazon. Download File - 66.0 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Ruth Patterson, Ph.D. on Time-Restricted Eating in Humans & Breast Cancer Prevention
Fri, Jul 08, 2016
Today's episode features Dr. Ruth Patterson, a professor in the UC San Diego Department of Family Medicine and Public Health as well as Associate Director of Population Sciences and leader of the Cancer Prevention program at Moores Cancer Center at UC San Diego Health. If you enjoyed my last episode with Dr. Satchin Panda, I have good news! This will also be a great episode for you, since we talk about some similar ideas, but focus more on the human side of things, especially when it comes to time-restricted eating, since Dr. Patterson does primarily clinical research.
In this 45-minute podcast, we talk about...
- The importance of time-restricted eating as a practical public health intervention, mostly for it's ease of implementation, that may have a widespread impact on disease risk.
- Why you should probably make sure your time-restricted eating window occurs earlier in the day, rather than later.
- How the first 5% drop in weight loss can have disproportionately large effects on the metabolic factors associated with breast cancer risk when compared with subsequent weight loss.
- The association of longer fasting durations beginning earlier in the evening and improved sleep in humans, as well as spontaneous physical activity in their day-to-day lives.
- The relationship between metabolism and breast cancer risk.
- The effect of lifestyle factors, such as obesity, physical activity, what and even when you eat, whether or not you smoke tobacco... and how even modest changes, such as consuming food earlier in the day and only during an 11-hour window, can decrease breast cancer risk and recurrence by as much as 36%.
- The importance of starting your fast earlier in the evening, and how an earlier eating window has been shown to correlate to reductions in inflammatory markers.
- The association of higher circulating insulin levels with breast cancer risk, and how insulin itself has an important relationship with estrogen by affecting the levels of sex-hormone binding globulin.
- The dangers of having a cellular environment that is inflamed, as the case is with the obese, and simultaneously having elevated cellular growth signals, which is also characteristic of the hormonal milieu of the obese.
- The surprisingly small role heredity plays in determining overall risk of breast cancer when compared to lifestyle factors.
- How healthful lifestyle habits, like choosing to eat during the right window, ultimately helps us trend our risk for many of the diseases of old age in the correct direction instead of influencing only one or another.
If the concept of time-restricted eating especially piques your interest, make sure to...
- Check out the podcast released just prior to this one: Dr. Satchin Panda on Time-Restricted Feeding and Its Effects on Obesity, Muscle Mass & Heart Health.
- Make sure your data points go to good use! Visit myCircadianClock.org to learn how you can, by committing to a minimum of a 14 week "intervention" and submitting pictures of your food from your iPhone or Android phone, move human research on time-restricted eating forward.
Huge special thanks to Dr. Ruth Patterson for coming on. Enjoy the podcast! Download File - 37.7 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Satchin Panda, Ph.D. on Time-Restricted Feeding and Its Effects on Obesity, Muscle Mass & Heart Health
Thu, Jun 30, 2016
Dr. Rhonda Patrick speaks with Dr. Satchin Panda, a professor at the Salk Institute for Biological Studies in La Jolla California. Satchin's work deals specifically with the timing of food and it's relationship with our biological clocks governed by circadian rhythm and also the circadian rhythm in general.
In this video we discuss...
- The fascinating history of experimentation that ultimately elucidated the location for the region of the brain necessary for a properly timed sleep-wake cycles.
- The relationship between our body's "master clock" and it's many peripheral clocks.
- Why infants sleep so intermittently, instead of resting for a longer, sustained duration like healthy young adults... and why this sustained rest also goes haywire in the elderly.
- The fascinating work Dr. Panda took part in that lead to the discovery of a specialized light receptor in the eye that sets circadian rhythms and is known as melanopsin.
- The important relationship between the relatively light insensitive melanopsin, which requires around 1,000 lux of light to be fully activated, and its control of the circadian clock by means of activation of the suprachiasmatic nucleus and suppression of melatonin.
- The effects light exposure seems to have on next-day cortisol, a glucocorticoid hormone that regulates around 10-20% of the human protein-encoding genome.
- The clever experimental design by which Dr. Panda and his colleagues discovered that certain circadian rhythms, especially of the liver, are entrained by when we eat, instead of how much light we get. This underlines the fact that, when managing are circadian rhythm, both elements are important!
- One of the more surprising effects of time-restricted feeding in mice eating a so-called healthy diet: increases in muscle mass and even endurance in some cases.
Interested in trying out time-restricted feeding? Don't let your data points go to waste! You can try out time-restricted feeding and have a real impact on human research! Commit to 14 weeks and download Dr. Panda's mobile app to get started. Learn more at: mycircadianclock.org/participant Download File - 79.5 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Ray Cronise on Cold Thermogenesis, Intermittent Fasting, Weight Loss & Healthspan Author: Rhonda Patrick, Ph.D.
Tue, May 3, 2016
Dr. Rhonda Patrick speaks with
Ray Cronise, a former NASA material scientist and cofounder of zero
gravity, a company that offers weightless parabolic flights to
consumers and researchers. In this episode, coming at the tail end
of a rather extreme 23-day water fast for Ray, we discuss, perhaps
unsurprisingly, some of the benefits that are associated with
fasting! Ray talks about
shifting one's perspective from looking at nutrition only through
the lens of meeting day-to-day nutritional needs, and instead, also
considering optimizing metabolism for longer-term effects as
well, the importance of
thinking about longevity in the context of functional healthspan,
some of the similarities between the body’s physiological response
to heat stress, cold stress, and exercise and so much
Learn more about Ray Cronise by
visiting his website at hypothermics.com
(raycronise.com) or by saying hello on twitter: twitter.com/raycronise.
Download File - 99.4 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Finally, Ray also has a book
available for pre-order called "Our
Dominic D'Agostino, Ph.D. on Modified Atkins Diet, Ketosis, Supplemental Ketones and More Author: Rhonda Patrick, Ph.D.
Wed, Mar 23, 2016 Download File - 91.5 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Peter Attia, M.D. on Macronutrient Thresholds for Longevity & Performance, Cancer & More Author: Rhonda Patrick, Ph.D.
Sat, Mar 12, 2016 Download File - 55.4 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
How Cryotherapy Affects the Brain, the Immune System, Metabolism, and Athletic Performance Author: Rhonda Patrick, Ph.D.
Fri, Feb 12, 2016 Download File - 49.8 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Rich Roll on Self-Transformation, Environmental Impact of Food, and the Plant-Based Diet Author: Rhonda Patrick, Ph.D.
Sat, Jan 23, 2016 Download File - 79.8 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Dr. Darya and Kevin Rose Talk Meditation Retreats, Diet, Seasonal Eating, and More Author: Rhonda Patrick, Ph.D.
Thu, Dec 24, 2015 Download File - 43.0 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Dr. Pierre Capel on the Power of the Mind & the Science of Wim Hof Author: Rhonda Patrick, Ph.D.
Fri, Nov 6, 2015 Download File - 70.8 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Wim Hof (the Iceman) on Defeating Extreme Cold & Attenuating the Immune Response Author: Rhonda Patrick, Ph.D.
Thu, Oct 22, 2015 Download File - 54.6 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
PRESENTATION: Rhonda Speaks at the Orthomolecular Congress in Bussum, Netherlands Author: Rhonda Patrick, Ph.D.
Thu, Oct 15, 2015 Download File - 55.0 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Buffering the Negative Effects of Chronic Stress with Meditation Author: Rhonda Patrick, Ph.D.
Fri, Sep 25, 2015 Download File - 37.9 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Sauna Use and Building Resilience to Stress with Dr. Rhonda Patrick Author: Rhonda Patrick, Ph.D.
Fri, Sep 11, 2015 Download File - 61.6 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
The Sonnenburgs On How The Gut Microbiota Interacts With Our Bodies Author: Rhonda Patrick, Ph.D.
Thu, Sep 3, 2015 Download File - 43.9 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Ron Krauss on Re-thinking Saturated Fat & LDL Cholesterol Author: Rhonda Patrick, Ph.D.
Thu, Aug 27, 2015 Download File - 78.0 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
CHORIBar: Micronutrients, Fiber & Polyphenols in a Bar Author: Rhonda Patrick, Ph.D.
Thu, Aug 20, 2015 Download File - 57.5 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Dr. Aubrey de Grey and Dr. Rhonda Patrick Talk Aging Author: Rhonda Patrick, Ph.D.
Thu, Aug 13, 2015 Download File - 44.8 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Rhonda Answers the Most Popular Questions About Vitamin D Author: Rhonda Patrick, Ph.D.
Thu, Aug 6, 2015
Dr. Rhonda Patrick answers some of the most popular questions regarding vitamin D including:
- How she decides how much vitamin D to supplement with
- Can you get too much vitamin D
- Is there a difference in vitamin D made from the sun versus a supplement
- What form of vitamin D is more bioavailable or absorbed better. Download File - 28.3 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Dan Pardi on the Consequences of Sleep Loss & Ways to Improve Sleep Author: Rhonda Patrick, Ph.D.
Tue, Jul 28, 2015 Download File - 61.2 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Tim Ferriss on Biomarkers, Ketosis, Microbiome, and Lyme Disease Author: Rhonda Patrick, Ph.D.
Mon, Jul 20, 2015 Download File - 70.1 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Jim Kean Talks Biomarkers, Building a Spectator Sport Author: Rhonda Patrick, Ph.D.
Wed, Jul 1, 2015 Download File - 30.5 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Dr. Bruce Ames Talks CHORI-Bar Weight Loss Author: Rhonda Patrick, Ph.D.
Sun, Jun 21, 2015 Download File - 8.9 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
How Sauna Use May Boost Longevity Author: Rhonda Patrick, Ph.D.
Tue, Apr 28, 2015 Download File - 109.6 MB Watch This Podcast (Streaming Video)
How to Personalize Your Nutrition Based On Genetics Author: Rhonda Patrick, Ph.D.
Mon, Mar 23, 2015 Download File - 135.2 MB Watch This Podcast (Streaming Video)
Bruce Ames on Triage Theory, Longevity Vitamins & Micronutrients Author: Rhonda Patrick, Ph.D.
Wed, Feb 11, 2015 Download File - 25.2 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
DEBUNKED: 2/3rds of Cancer "Just Bad Luck" Author: Rhonda Patrick, Ph.D.
Tue, Jan 27, 2015 Download File - 65.5 MB Watch This Podcast (Streaming Video)
5 to 7x More Stem Cells from Placenta with Dr. Frans Kuypers Author: Rhonda Patrick, Ph.D.
Tue, Dec 16, 2014 Download File - 73.1 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Lactate As Brain Fuel with Dr. George Brooks Author: Rhonda Patrick, Ph.D.
Tue, Dec 2, 2014 Download File - 70.3 MB (Click to Play on Mobile Device) Listen To This Podcast (Streaming Audio)
Krill Oil's Brain-DHA Advantage Author: Rhonda Patrick, Ph.D.
Mon, Sep 29, 2014 Download File - 98.5 MB Watch This Podcast (Streaming Video)
Do Antioxidants Cause Cancer? Author: Rhonda Patrick, Ph.D.
Tue, Aug 5, 2014 Download File - 149.7 MB Watch This Podcast (Streaming Video)
Dr. Terry Wahls' Protocol That Reversed Multiple Sclerosis Author: Rhonda Patrick, Ph.D.
Mon, Jul 21, 2014 Download File - 284.1 MB Watch This Podcast (Streaming Video)
Hyperthermic Conditioning for Hypertrophy, Endurance, and Neurogenesis Author: Rhonda Patrick, Ph.D.
Tue, Feb 18, 2014 Download File - 142.7 MB Watch This Podcast (Streaming Video)
"Hack Your Genes" at San Francisco Nerd Nite Author: Rhonda Patrick, Ph.D.
Mon, Feb 17, 2014 Download File - 161.7 MB Watch This Podcast (Streaming Video)
The "Vitamin D Sweet Spot" and Its Relationship To Aging Author: Rhonda Patrick, Ph.D.
Sun, Aug 11, 2013 Download File - 71.3 MB Watch This Podcast (Streaming Video)
Maximizing Your Mitochondria with Magnesium Author: Rhonda Patrick, Ph.D.
Mon, Jul 15, 2013 Download File - 32.0 MB Watch This Podcast (Streaming Video)
3 Mechanisms for Magnesium Deficiency Author: Rhonda Patrick, Ph.D.
Tue, Jul 23, 2013 Download File - 34.8 MB Watch This Podcast (Streaming Video)
Rebuttal to Anti-Vitamin Editorial: "Enough is Enough" Author: Rhonda Patrick, Ph.D.
Sat, Feb 01, 2014 Download File - 168.0 MB Watch This Podcast (Streaming Video)
The IGF-1 Trade-Off: Performance vs. Longevity Author: Rhonda Patrick, Ph.D.
Mon, Nov 25, 2013 Download File - 62.2 MB Watch This Podcast (Streaming Video)
Understanding Cancer, part I Author: Rhonda Patrick, Ph.D.
Tue, Jul 02, 2013 Download File - 33.9 MB Watch This Podcast (Streaming Video)
Understanding Cancer, part II Author: Rhonda Patrick, Ph.D.
Tue, Jul 02, 2013 Download File - 13.1 MB Watch This Podcast (Streaming Video)
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