Cold doesn’t bother You – You’re a Genetic Mutant

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One in five people are thought to carry a mutation that is linked to better tolerance to the cold
One in five people are thought to carry a mutation that is linked to better tolerance to the cold

New research has found one in five people have a specific genetic mutation that confers greater resilience to cold temperatures. The experimental study shows how people with a deficiency in generating a certain skeletal muscle protein shiver less and hold a higher core temperature in cold environments.

Recent genomic studies have suggested about 20 percent of people have a novel mutation in the ACTN3 gene, which expresses a skeletal muscle protein called alpha-actinin-3. This protein is found in greater volumes in fast-twitch muscle fibers.

The mutation in ACTN3 leads to a deficiency in alpha-actinin-3, increasing the prominence of slow-twitch muscle fibers. Evolutionary biologists have previously tracked the appearance of this mutation in humans as people migrated out of Africa into Europe and Asia.

Exactly what purpose this particular mutation served has been unknown but some researchers have hypothesized it as possibly helping early humans adapt to the colder climates of Europe. A new international study set out to empirically test that hypothesis.

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About the Common Constitutionalist

Brent, aka The Common Constitutionalist, is a Constitutional Conservative, and advocates for first principles, founders original intent and enemy of progressives. He is former Navy, Martial Arts expert. As well as publisher of the Common Constitutionalist blog, he also is a contributing writer for Political Outcast, Godfather Politics, Minute Men News (Liberty Alliance), Freedom Outpost, the Daily Caller, Vision To America and Free Republic. He also writes an exclusive weekly column for World Net Daily (WND).