is essential for many body functions, including regulation of
the heartbeat, conduction of nerve impulses, stimulation of
hormone secretions and clotting of blood, as well as for
building and maintaining a healthy skeleton.
is a mineral found in many foods and adequate calcium intake
is important because the human body cannot produce calcium.
Even after reaching full skeletal growth, adequate calcium
intake is important because the body loses calcium every day
through shed skin, nails, hair, and sweat as well as through
urine and feces. This lost calcium must be replaced daily
through the diet. When the diet does not contain enough
calcium to perform these activities, calcium is taken from the
bones, the storage area for calcium.
National Academy of Sciences and the National Osteoporosis
Foundation recommend daily calcium intakes of 1000-1200 mg/day
for adult men and women. According to experts, food is the
best source of calcium; however, most Americans do not have
enough calcium in their diets. Fortunately, calcium-fortified
foods and calcium supplements can fill the gap, ensuring that
the daily calcium requirement is met. The amount needed from a
supplement depends on how much calcium is consumed from food
of Americans are at risk