Vitamin A (Retinol)

The retinol (vitamin A) risk

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Does too much vitamins A increase fracture risk? The evidence is pilling up.

Last year, Harvard Medical School researchers reported that high vitamin A intake raises the risk of hip fracture in postmenopausal women (HWHW, March 2002). The data, from 72,337 women in the Nurses' Health Study, suggest that the main culprit is retinol, the active form of the vitamin. Retinol is found in supplements, liver, eggs, full-fat dairy products, fish liver oils, and fortified foods such as cereals and skim milk. Beta carotene, which converts to vitamin A in the body, was not implicated.

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