Magnesium is part of the structure of bones. Most of the magnesium in the body, about 60 percent, is used as part of the structure of the bones. Magnesium is needed for proper bone mineralization along with calcium and phosphorus. Parathyroid hormone and calcitriol (the active vitamin D hormone) both depend upon magnesium for the mineralization of bone.
When magnesium is low in the blood, blood calcium levels also fall. Low levels of magnesium in bone cause a resistance to parathyroid hormone, resulting in less bone mineralization. Even lower levels of magnesium in bone lead to bone crystals that are larger and more brittle. This is why adequate magnesium may be a factor in preventing osteoporosis.
MUSCLE CONTRACTION AND RELAXATION
Magnesium and calcium work together to coordinate muscle contraction and relaxation. These two minerals maintain normal cell membrane electrical potentials. Increased calcium in muscle cells triggers contraction. Increased magnesium in muscle cells counteracts the contraction, resulting in relaxation. Calcium and magnesium also work together to contract and relax capillaries. Magnesium is a potent vasodilator, opening blood vessels and lowering blood pressure.
When magnesium is low in the blood, blood calcium levels also fall. Low levels of magnesium in bone cause a resistance to parathyroid hormone, resulting in less bone mineralization. Even lower levels of magnesium in bone lead to bone crystals that are larger and more brittle. This is why adequate magnesium may be a factor in preventing osteoporosis.
MUSCLE CONTRACTION AND RELAXATION
Magnesium and calcium work together to coordinate muscle contraction and relaxation. These two minerals maintain normal cell membrane electrical potentials. Increased calcium in muscle cells triggers contraction. Increased magnesium in muscle cells counteracts the contraction, resulting in relaxation. Calcium and magnesium also work together to contract and relax capillaries. Magnesium is a potent vasodilator, opening blood vessels and lowering blood pressure.
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