Idobi/Wikimedia Commons. CC BY-SA 3.0A cold-water diving tradition on South Korea’s Jeju Island may have shaped the genetics of its population. The Haenyeo — “women of the sea” — have dived for seafood for centuries, without breathing apparatus, all year round. Researchers found that people from Jeju, whether Haenyeo or not, are more likely to have gene variants associated with reduced blood pressure, improved blood oxygen-carrying capacity, and greater pain resistance, Nature reported. The Haenyeo gather seaweed and abalone in 50°F (10°C) water, diving to 60-foot depths, sometimes when pregnant or having recently given birth, although the practice is dying out, The Washington Post noted: Most are now over 60. Researchers hope the discovery could aid the development of medication for stroke and other cardiovascular problems. |