Dr. Sanjay Gupta: Memory fades as we age. But it doesn't have to

Ten months into the pandemic, I turned 51 and did the math: I'm entering the final third of my life. I know that sounds grim, and I am hoping to get more time than that, but I often do these mental calculations because the clock of life inspires me to make the most of the years that remain. That constant tick-tock reminds me to fill the final decades with invigorating experiences to bank in my inner black box -- a delightful cache of memories to replay over and over in my mind like a favorite movie.

In order for my plan to work, however, I have to invest in my brain now to ensure that it stays sharp into ripe old age, even if my body starts to betray me. Accomplishing this is well within my reach, and starts with a basic truth: Unlike most any other organ in the body, our brains are not pre-ordained to wither away, lose power, blunt their edge or, worst of all, become forgetful.

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