Almost every cell in a human body carries a copy of our genetic code, the DNA that holds the unique biological blueprint for who we are.
That DNA tells our cells what to do. When they divide, that information is copied from one cell to another.
But life is hard on our cells. They become damaged every moment of every day, exposed the radiation of the sun, the heat of our laptops, the chemicals we absorb from air pollution, the alcohol we drink, and more. Aging itself damages them.
