Health Glossary

go to: A-B, C, F-I, K-L, N-P, S-T, V, Z

Magnesium

The mineral magnesium plays an important role in regulating neuromuscular activity of the heart and maintaining normal heart rhythm. It is necessary for proper calcium and Vitamin C metabolism, and converting blood sugar into energy.

Foods that contain magnesium include: nuts, legumes, whole grains, and green vegetables.

Manganese

Manganese is an antioxidant nutrient and is necessary for the blood breakdown of amino acids and the production of energy. It is also used in the metabolism of Vitamin B-1 and Vitamin E. Manganese activates various enzymes important for proper food digestion. It is also a catalyst in the breakdown of fats and cholesterol and is necessary for normal skeletal development.

Melatonin

Melatonin is secreted by the pineal gland, a pea-size structure at the center of the brain, when our eyes register darkness. Melatonin helps regulate our sleep-wake cycles. The amount of melatonin produced by our body seems to lessen as we get older. Scientists believe this may be why young people have fewer problems sleeping than older people. Melatonin may have other uses and has been reported to strengthen the immune system, and reduce free radicals in the body.

Minerals

All tissues and internal fluids of our body contain varying quantities of minerals. Minerals are constituents of bones, teeth, soft tissue, muscle, blood, and nerve cells. They are vital to overall mental and physical well-being.

Minerals act as catalysts for many biological reactions within the body, including muscle response, the transmission of messages through the nervous system, the production of hormones, digestion, and the use of nutrients in foods. Vitamins cannot be assimilated without the aid of minerals. The body cannot manufacture minerals itself.