Harvard Health Letter

What has the most impact on longevity?

Ask the doctor Q. My family tends to be long-lived. I hear longevity is due to our DNA, and I also hear itís due to lifestyle. Which is it, and how do they make us live longer? A. Both DNA and lifestyle can affect longevity, and they both do so in the same way: by altering our body chemistry. DNA controls the production of each of the natural chemicals in our body. It controls…

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