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What causes osteoporosis?

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In brief: Causes of Osteoporosis​

Low levels of oestrogen
The female hormone oestrogen reduces the amount of bone that is broken down and so helps to protect against osteoporosis.
The ovaries make oestrogen from puberty to the menopause. Any condition that reduces the number of years that a woman produces oestrogen tends to increase the risk of osteoporosis.
These risks include:
• having an early menopause (before the age of 45)
• an early hysterectomy (before theage of 45, especially if both ovaries are removed)
• missing periods for six months or more as a result of over-exercising or over-dieting


Other risk factors
• Men who have low levels of the male hormone, testosterone, are also at a higher risk of osteoporosis. For both men and women, the following factors also increase the risk of developing osteoporosis:
• long-term use of corticosteroid tablets (medicines sometimes used for conditions such as severe allergies)
• a family history of broken hips
• digestive disorders that affect absorption of nutrients, such as Crohns disease or ulcerative colitis
• long-term immobility
• heavy drinking
• smoking
• very low body weight

In brief: Causes of Osteoporosis​

Low levels of oestrogen
The female hormone oestrogen reduces the amount of bone that is broken down and so helps to protect against osteoporosis.
The ovaries make oestrogen from puberty to the menopause. Any condition that reduces the number of years that a woman produces oestrogen tends to increase the risk of osteoporosis.
These risks include:
• having an early menopause (before the age of 45)
• an early hysterectomy (before theage of 45, especially if both ovaries are removed)
• missing periods for six months or more as a result of over-exercising or over-dieting


Other risk factors
• Men who have low levels of the male hormone, testosterone, are also at a higher risk of osteoporosis. For both men and women, the following factors also increase the risk of developing osteoporosis:
• long-term use of corticosteroid tablets (medicines sometimes used for conditions such as severe allergies)
• a family history of broken hips
• digestive disorders that affect absorption of nutrients, such as Crohns disease or ulcerative colitis
• long-term immobility
• heavy drinking
• smoking
• very low body weight
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