Boron seems to affect the way the body handles other minerals such as magnesium and phosphorus. It also seems to increase estrogen levels in older (post-menopausal) women and healthy men. Estrogen is thought to be helpful in maintaining healthy bones and mental function. Boric acid, a common form of boron, can kill yeast that cause vaginal infections.
Boron is a mineral that is found in food and the environment.
People take boron supplements as medicine. Boron is used for building strong bones, treating osteoarthritis, as an aid for building muscles and increasing testosterone levels, and for improving thinking skills and muscle coordination.
Women sometimes use capsules containing boric acid, the most common form of boron, inside the vagina to treat yeast infections.
People also apply boric acid to the skin as an astringent or to prevent infection; or use it as an eye wash. Boron was used as a food preservative between 1870 and 1920, and during World Wars I and II.