Updated April 11, 2013
All minerals, including calcium, come originally from the ground and enter animals through plants. Which means plants are loaded with calcium, iron, zinc, copper, etc., and the more plants you eat the more minerals you acquire. The relationship between people and plants works so well that there has never been a case of dietary calcium deficiency ever reported. To put it even more clearly: all-plant diets are sufficient to meet the needs of growing children and adults (infants need breast milk). Calcium pills have a few adverse effects like constipation and inhibition of iron absorption. The most serious mistake a person can make is to believe cow’s milk is a “good” and necessary source of calcium. Heart disease, cancer, type-2 diabetes, arthritis, and infectious disease are only a few of the common consequences of drinking milk from other animal species.
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