Research involving over a million people shows that those carrying a Neanderthal version of the growth hormone receptor tend to have more muscle mass, helping explain some of the traits inherited from our ancient relatives.
- Neanderthal variant linked to 271 grams more muscle on average
- Most common in South and East Asian populations
- Lab and population studies aligned on muscle growth impact
What happened
Scientists examined a specific version of the growth hormone receptor gene inherited from Neanderthal ancestors. This gene variant was found to influence muscle development significantly. By studying cell cultures, the researchers observed that the Neanderthal form of the receptor promoted greater growth compared to the modern human version. Population data from over one million individuals also showed this genetic influence reflected in muscle mass among carriers.
The findings showed people with one copy of this Neanderthal gene had on average 271 grams more muscle, with those inheriting it from both parents displaying even greater muscle build. The gene variant is particularly prevalent in South and East Asian populations, reaching up to nearly a quarter of individuals in some South Asian groups.
Why it feels good
This discovery adds a fascinating layer to our understanding of how Neanderthal genes continue to shape aspects of modern human physiology. It offers insight into why certain physical traits, such as robustness and muscle development, connect back to interbreeding events that happened tens of thousands of years ago.
Moreover, the study is a rare case where laboratory experiments and large-scale genetic data align perfectly, confirming that ancient genetic contributions still have tangible effects today. While the Neanderthal variant enhances muscle growth, experts remind us that genetics supports but doesn’t replace the benefits of regular training and exercise.
What to enjoy or watch next
As research on Neanderthal genetics continues, future studies may uncover more ways these ancient DNA fragments influence modern health, immunity, and physical traits. Tracking how these genes function across different populations could offer valuable knowledge about human evolution and personalized health.
For now, this breakthrough invites everyone to appreciate the complexity of our shared history. Whether you’re fascinated by genetics, fitness, or anthropology, this finding is a wonderful example of nature’s lasting legacy that connects us to our prehistoric past.