Most of our cells have a genetic code that, when deciphered, tells our body how to make the proteins we need for survival.
Most of our cells have a genetic code that, when deciphered, tells our body how to make the proteins we need for survival. With the passing of time and experience of hardship, small modifications are added to act like 'genetic switches', affecting the way our cells interpret the instructions without changing the code itself. Accumulations of these so-called epigenetic changes are often used to estimate the biological age of our cells and tissues. But researchers in Lithuania have now shown that the edits can fluctuate throughout the day, suggesting tests based on a single tissue sample aren't as accurate as they could be. The team studied multiple blood samples from a 52-year-old man taken every three hours over 72 hours, looking at 17 different epigenetic clocks within each specimen's collection of white cells.
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