Boron is required by your body in trace amounts for proper metabolism of calcium, magnesium, and phosphorus. Boron helps brain function, healthy bones, and can increase alertness. Boron supplements are especially good for older people. Boron is required by your body in trace amounts for proper metabolism of calcium, magnesium, and phosphorus. Boron helps brain function, healthy bones, and can increase alertness. Boron supplements are especially good for older people. Boron is known to help support proper bone growth. Boron is also useful for people who want to build muscle.