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Bone mineral density remains low in young anorexic patients even after weight gain, a new UK study shows.

Over a year, there was no improvement in the bone mineral density of the spine

or proximal femur, despite an average weight gain of 10kg and significant gain in height.

Total body bone mineral content was significantly higher than baseline at three months and 12 months, but total body bone mineral density at three months was significantly lower than at baseline.

'These results indicate that although weight gain in young anorexics is associated with linear growth, bone mineral density does not increase,' the researchers concluded.

The University of Cambridge study, published online in Osteoporosis International this month, studied 26 patients with anorexia.

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