What is aging?

Evolution doesn’t care if you age

Evolution by natural selection works at the level of genes, not individual organisms. We all carry thousands of different genes, and pass them on to our children. Genes best suited to their environment survive better, which lets them produce more offspring. Over time, these beneficial genes become more widespread in the population. Age plays a large role in determining the effect of a gene on the population.

Aging and disease

Shockingly, and almost without precedent in human history, children today may live a shorter lifespan than their parents. The 20thcentury witnessed huge steady advances in medicine and public health that have significantly increased average life expectancy. But recently an epidemic of chronic diseases threatens to slow or reverse that enviable record.



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Dr. Jason Fung

Nephrologist. New York Times best selling author. Interest in type 2 diabetes reversal and intermittent fasting. Founder www.TheFastingMethod.com.