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DNA clocks suggest aging is preprogrammed in our cells

Looking at the DNA in a tissue sample is now all you need to accurately estimate the age of almost any mammal, and it reveals something fundamental about aging.

Health


September 15, 2022

DNA “aging clocks” found in mammals suggest that aging is due to errors in our bodies’ developmental programs.

Cooperr/Shutterstock

The age of almost any mammal can now be accurately estimated from a tissue sample by analyzing chemical tags added to DNA. The finding comes from a study of nearly 200 species and could overturn our understanding of aging.

The team involved say that the fact that all mammals seem to have the same “aging clocks” shows that aging is the result of developmental programs that have been maintained during mammalian evolution…

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