Osteoporosis is defined by the World Health Organization ( WHO ) in women as a bone mineral density 2. 5 standard deviations below peak bone mass ( 20-year-old sex-matched healthy person average ) as measured by DEXA ; the term " established osteoporosis " includes the presence of a fragility fracture.

Osteoporosis is defined by the World Health Organization ( WHO ) as a bone mineral density that is 2. 5 standard deviations or more below the mean peak bone mass ( average of young, healthy adults ) as measured by DXA ; the term " established osteoporosis " includes the presence of a fragility fracture.

Osteoporosis is defined by the World Health Organization ( WHO ) in women as a bone mineral density 2. 5 standard deviations below peak bone mass ( 20-year-old sex-matched healthy person average ) as measured by DXA ; the term " established osteoporosis " includes the presence of a fragility fracture.

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