Between around 1 and 10 million bacteria cells are killed by your immune system every second. About 4 million of your own cells die and are replaced every second too. And each time a cell is replaced, your full DNA genome is copied over but it’s never a perfect copy. Hence aging.
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u/AntSilly2802 16d ago
Between around 1 and 10 million bacteria cells are killed by your immune system every second. About 4 million of your own cells die and are replaced every second too. And each time a cell is replaced, your full DNA genome is copied over but it’s never a perfect copy. Hence aging.