Boron is a trace mineral which is involved in both calcium and magnesium metabolism and may play an importing role hormone metabolism. Boron may be be useful to increase strength and muscle mass, maintain bone density, and decrease body fat. Boron may also help to prevent arthritis in the elderly.
"Research has shown that low boron diets have been associated with reduced testosterone levels and boron supplements have been shown to increase serum levels of testosterone in postmenopausal women. This finding caused an increase in boron supplements targeting athletes and bodybuilders for boosting testosterone levels, strength and muscle mass. However, specific research on athletes has not yet confirmed this association that boron alone will boost testosterone."
Dietary Sources: Dried fruits, nuts, dark green leafy vegetables, avocados, applesauce, grape juice, and beans and peas. Meat and fish are poor dietary sources of boron.
List of Boron Rich Foods
Beans (red kidney)
Cashew Nuts (raw)
Wine (Shiraz Cabernet)
Source: Boron Rich Foods - Sources of Boron