Boron is needed in trace amounts for healthy bones and muscle growth because it assists in the production of natural steroid compounds within the body. It is also necessary for the metabolism of calcium, phosphorus, and magnesium.

Significant studies have found that a deficiency of the mineral may dull thinking and can interfere with hand-eye coordination, while other research shows a decided impact on arthritis and other bone degenerative diseases.

Taking 6mg of boron daily for eight weeks, one study concluded, significantly improved arthritic symptoms and had a marked benefit against sever osteoarthritis. Elderly people usually benefit from taking a supplement of 2 to 3 mg daily because they have greater problems with calcium absorption. Boron deficiency accentuates vitamin D deficiency.

According to one study, boron apparently may raise a woman's natural estrogen level just as much as does hormone replacement therapy and is an equally effective safeguard against osteoporosis.

Deficiency signs and symptoms
Decrease in ability to concentrate, drowsiness, urinary excretion of calcium and magnesium.

Good food sources
Fresh fruits, apples, vegetables, carrots, grapes, dark green leafy vegetables, raw nuts, pears and whole grains.