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30.0 x 24.1 cm ⏐ 11.8 x 9.5 in (300dpi)
SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
X-ray of the feet of someone suffering from osteoporosis. Osteoporosis is a reduction in the mass of bone causing an increase in brittleness and a greater risk of fractures, particularly of the vertebrae, hip or arm. The condition arises through an imbalance between formation & resorption of bone, most commonly occurring with increasing age. The incidence is greater in women than in men and is attributed to a decline in hormone production following the menopause. Oestrogens (sex hormones) may be used to prevent & treat age-related disease, although their use is controversial.
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