South Korean Haenyeo Divers’ Extreme Lifestyle Is Shaping Their Genetics

image via New Scientist

June 2, 2025, 12:00 PM

• •Study finds genetic adaptations and training effects unique to the Haenyeo divers that help them withstand physical stress.
• •Researchers found that Haenyeo have genetic features that allow them to more efficiently control blood pressure.
• •The study suggests that the genetic variations may have naturally spread throughout the island of Jeju.

The Haenyeo, South Korea's all-female diving group, have been free-diving for centuries, showcasing remarkable underwater abilities. A new study reveals that these women possess unique genetic adaptations, including the ability to efficiently control blood pressure, which may explain their ability to withstand the intense physical stresses of diving. The research also suggests that these advantageous genetic variations may have spread throughout Jeju Island. The findings could inform future approaches to certain disorders and offer insights into human evolution.

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