Why Do We Age?

Our bodies’ natural system to repair what breaks down inside us falters as we get older, explains an expert

Kenny Westerman, E14, N16, N19, who received a Ph.D. in biochemical and molecular nutrition from the Friedman School of Nutrition Science and Policy, is now an instructor at Massachusetts General Hospital and Harvard Medical School, with a research focus on precision lifestyle and medicine for the prevention of cardiometabolic diseases.

Explaining the aging process that occurs in humans, he says that we age “essentially because our bodies are like a big engine” that makes energy and other things we need to function. “But as this engine is running, we end up accumulating byproducts, waste, and junk that will eventually over time interfere with the function of our cells.

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