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During puberty, girls usually develop more than a third of their adult peak bone mass, setting the stage for healthier bones later in life and lowering chances of osteoporosis. In this study of twenty pairs of identical twin girls, approaching or in puberty and aged 9 to 13, one sister took 800 mg of calcium plus 400 IU of vitamin D3 per day while her twin took a placebo. After six months, doctors measured bone strength and found, compared to placebo, girls in the calcium-vitamin D group had up to 66 percent stronger shin and arm bones depending on the specific area of the bone. Researchers said that bone size, density and strength increased in the spongy-bone areas inside of bones and in the compact-bone areas along the outer shafts of the arm and shin.

Reference: Osteoporosis International; 2011, Vol. 22, No.2, 489-98

From the July 2011 newsletter

Van's Health on December - 11 - 2011
categories: Supplements, Vitamins

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