Sunlight may help lower blood pressure
Limited sun exposure may help protect against high blood pressure and some cardiovascular diseases, according to a new study.
Scientists from the U.K. gave healthy volunteers Ultraviolet-A (UVA) radiation—about the equivalent of 30 minutes in natural sunlight—and found that it led to decreased blood pressure. Researchers said it is possible that sunlight activates nitric oxide found in the skin, which dilates blood vessels and lowers blood pressure.
Researchers said that the changes found in the study were small, and many factors remain unclear, such as how different demographics of people respond to sun exposure. More studies are necessary for researchers to better understand the health risks versus benefits of natural sun exposure.
Evidence has shown that people can also reduce their risk for high blood pressure by not smoking, getting enough exercise and limiting sodium intake.