What is the Methuselah gene?

Researchers have discovered that some people have a genetic mutation that decreases their cells' use of a particular growth hormone, called IGF1, which stands for insulin-like growth factor 1. As a result, they tend to be smaller and live longer than an average life span. The genetic mutation is referred to as Methuselah's gene because that biblical figure lived to the ripe old age of 969.

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