The mineral of bones and teeth, critical during growth.
Calcium is the most abundant mineral in the human body (99% in bones and teeth). It is indispensable for bone mineralization, muscle contraction and nerve transmission.
Bone calcium is in perpetual renewal. Vitamin D is essential for its intestinal absorption. Absorption varies from 30-40% (dairy) to 5-15% (vegetables). Chronic deficiency causes osteoporosis. Coffee, salt and excess protein increase urinary calcium excretion.
Bone and dental mineralization, muscle contraction, coagulation, nerve impulse transmission.
RDA: 1000mg/day adult, 1200mg after age 55 (women) and 65 (men). Distribute intake throughout the day.
Bone capital is built until age 25 — calcium intake in childhood is decisive for life.
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