It lowers blood pressure and prevents bone loss associated with osteoporosis as well. It is also involved in the activation of several enzymes including lipase. Calcium protects the bones and teeth from lead by inhibiting absorption of this toxic metal. If there is a calcium deficiency, lead will be absorbed by the body and deposited in the teeth and bones. This may account for the higher levels of lead in children who have a higher incidence of cavities.
Calcium is more effective when taken in smaller doses spread throughout the day and before bedtime.
When taken at night, it promotes a sound sleep. Female athletes and women experiencing menopause need greater amounts of calcium due to lower estrogen levels. Magnesium is vital to enzyme activity. It assists in calcium and potassium uptake. A deficiency interferes with the transmission of nerve and muscle impulses, causing irritability and nervousness.