Your Spit Can Reveal How Old You Are

From people claiming to be 130 years old to lying about their age in order to compete in the Olympics, lying about how old you are is a age old past time. Now however the next time you claim it’s your “29th birthday” your friends can snag a swab of your spit to prove you wrong.

This remarkable finding was made by researchers at UCLA. They found that the DNA contained in a person's saliva undergoes changes as a person gets older. One of the building blocks of DNA experiences a process known as methylation, which alters its appearance over time and can be used to estimate precisely how old a person is.


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