You May Carry Neanderthal DNA. Scientists Found What It Does to You
Summary
Scientists discovered a gene variant inherited from Neanderthals that makes the body react more strongly to growth hormone, leading to increased muscle mass in adults. This gene variant is still present in millions of people and causes about 270 grams more muscle on average per gene copy.Key Facts
- The gene variant affects the growth hormone receptor, which controls muscle and bone development.
- It came from Neanderthals interbreeding with modern humans around 47,000 years ago.
- Lab tests showed cells with the Neanderthal version grew 40% more than those with the modern human version.
- Adults with the gene variant have about 270 grams more muscle per copy of the gene.
- The effect typically begins after puberty, not in early childhood.
- Carriers also have some minor skeletal differences linked to Neanderthal traits.
- Having two copies of the gene could add roughly half a kilogram of muscle.
- The gene variant helps muscle growth but does not replace the benefits of physical training.
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