Time-Restricted Feeding and Its Effects on Obesity, Muscle Mass & Heart Health

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

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Found My Fitness Podcast: Ray Cronise, Cold Thermogenesis, Intermittent Fast, Weight Loss and Healthspan

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 more. Learn more about Ray Cronise by visiting his website at hypothermics.com (raycronise.com) or by saying hello on twitter: twitter.com/raycronise. Finally, Ray also has a book available for pre-order called “Our Broken Plate.”

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