In this episode, David Sinclair, Ph.D., a Professor in the Department of Genetics at Harvard Medical School and co-Director of the Paul F. Glenn Center for the Biological Mechanisms of Aging, returns to the podcast to discuss the content of his new book, Lifespan: Why We Age and Why We Dont Have To. This conversation focuses on the biological mechanisms involved in what David terms the Information Theory of Aging which provides insights into the clock that determines our aging and to what degree it can be manipulated. Our discussion on aging of course leads us into interconnected topics of epigenetics, sirtuins, cellular senescence, as well as what compounds David is personally taking for his own longevity. Additionally, we discuss the most up to date information related to NAD and longevity by looking at the potential benefits (if any) of supplemental agents (NAD precursors, NR, NMR, etc.) that pose a promise of increasing NAD.

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The SIR gene silent information regulator is a gene that controls other genes

The SIR enzyme is the master regulator of this cellular survival circuit

Figure 1. When SIR enzyme proteins detect stress in the cell (e.g. DNA breakage) the protein leaves the silent region to go and repair the DNA. When the problem is fixed, it returns to its original post, silencing genes. Image credit: (Alves-Fernandes and Jasiulionis, 2019)

Overtime, in the back-and-forth of repair SIR genes lose track of which genes should be silenced or not

We have some early evidence from mice that we can actually find that hard disk drive and reinstall the software so that its pristine again and we find that we can actually improve the health quite dramatically in parts of a mouses body. David Sinclair, Ph.D

What does Claude Shannons Information Theory of Communication have to do with aging?

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David A. Sinclair, Ph.D. is a Professor in the Department of Genetics at Harvard Medical School and co-Director of the Paul F. Glenn Center for the Biological Mechanisms of Aging.

He is best known for his work on understanding why we age and how to slow its effects. He obtained his Ph.D. in Molecular Genetics at the University of New South Wales, Sydney in 1995. He worked as a postdoctoral researcher at M.I.T. with Dr. Leonard Guarente where he co-discovered a cause of aging for yeast as well as the role of Sir2 in epigenetic changes driven by genome instability. In 1999 he was recruited to Harvard Medical School where his laboratorys research has focused primarily on understanding the role of sirtuins in disease and aging, with associated interests in chromatin, energy metabolism, mitochondria, learning and memory, neurodegeneration, and cancer. He has also contributed to the understanding of how sirtuins are modulated by endogenous molecules and pharmacological agents such as resveratrol.

Dr. Sinclair is the co-founder of several biotechnology companies (Sirtris, Ovascience, Genocea, Cohbar, MetroBiotech, ArcBio, Liberty Biosecurity) and is on the boards of several others. He is also co-founder and co-chief editor of the journal Aging. His work is featured in five books, two documentary movies, 60 Minutes, Morgan Freemans Through the Wormhole and other media.

He is an inventor on 35 patents and has received more than 25 awards and honors including the CSL Prize, The Australian Commonwealth Prize, Thompson Prize, Helen Hay Whitney Postdoctoral Award, Charles Hood Fellowship, Leukemia Society Fellowship, Ludwig Scholarship, Harvard-Armenise Fellowship, American Association for Aging Research Fellowship, Nathan Shock Award from the National Institutes of Health, Ellison Medical Foundation Junior and Senior Scholar Awards, Merck Prize, Genzyme Outstanding Achievement in Biomedical Science Award, Bio-Innovator Award, David Murdock-Dole Lectureship, Fisher Honorary Lectureship, Les Lazarus Lectureship, Australian Medical Research Medal, The Frontiers in Aging and Regeneration Award, Top 100 Australian Innovators, and TIME magazines list of the 100 most influential people in the world. [medapps.med.harvard.edu] His new book, Lifespan, explains why we age and why we dont have to.

David on LinkedIn: David A. Sinclair, Ph.D. A.O.

David on Twitter: @davidasinclair

David on Instagram: davidsinclairphdDavids book website: lifespanbook.com

BOSTON, MA - MAY 16: David A. Sinclair, Professor of Genetics and Director of the Paul F. Glenn Center for the Biology of Aging, poses for a portrait in the lab at Harvard Medical School in Boston on May 16, 2018. (Photo by Craig F. Walker/The Boston Globe via Getty Images)

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#70 - David Sinclair, Ph.D.: How cellular reprogramming could ...