Boron

1 Pages 217 Words

Recent studies of bone, mineral and lipid metabolism, energy utilization, and immune function suggest that the element boron may be an essential nutrient for animals and humans. This report reviews several studies conducted in our laboratory that address the importance of boron for brain and psychological function. An initial study with mature rats found that adding small amounts of boron to a very low boron diet changed brain electrical activity in a manner consistent with increased activation. Three human studies followed that evaluated the effects of dietary boron on brain electrical activity and on performance of several mental and motor tasks. Two studies found that feeding a very low boron diet resulted in brain electrical activity changes consistent with deceased brain activation and similar to those observed in general malnutrition and lead toxicity. Very low boron intakes were also associated with poorer performance on tasks of motor speed and dexterity, attention and short-term memory; the latter two tasks showed poorer performance in all three studies. A fifth study found no support for reports that boron supplementation relieves menopausal symptoms. Possible biological mechanisms by which changes in boron intake and status might cause the observed effects in brain and psychological function are discussed. Findings indicate that boron is an important nutrient for brain and psychological function in humans....