Dairy products and calcium do not prevent stress fractures, according to a new study published in Archives of Pediatrics and Adolescent Medicine.
Researchers followed adolescent girls for seven years, tracking their diets, physical activity, and stress fractures. Girls consuming the most dairy products and calcium had no added protection. In fact, among the most active girls—exercising more than one hour per day—those who got the most calcium in their diets (coming mostly from dairy products) had more than double the risk of a stress fracture, compared with those getting less calcium. Researchers found that vitamin D intake did help cut risk. Girls getting the most vitamin D had half the risk of a fracture, compared with girls getting less vitamin D.
Sonneville KR, Gordon CM, Kocher MS, Pierce LM, Ramappa A, Field AE. Vitamin D, Calcium, and Dairy Intakes and Stress Fractures Among Female Adolescents. Arch Pediatr Adolesc Med. Published ahead of print March 5, 2012.
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