Harvard Scientist Dr. David Sinclair goes over some breakthrough in the areas if anti aging, and also a substance that has the effect of turning around aging in computer mice.
Harvard Scientist David Sinclair – The Mitochondrial Theory of Aging
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You can also increase you NAD-to-NADH ratio with: Calorie restriction, exercise, plant polyphenols, protein-restriction, etc. Problem is people want to do exactly the opposite.