the primary risk factors for osteoporosis and ways to prevent the condition:

Sedentary lifestyle. The strength of our bones depends very much on the amount of physical activity we build into our lives. Regular, weight-bearing exercise such as walking, running, hiking and weight training all help to drive calcium into the bones.
Drinking carbonated beverages.

The phosphates in most sparkling drinks cause calcium to be leached from the bones.
Too much coffee or tea. Caffeine is a diuretic drug, increasing the flow of urine and associated loss of calcium and other minerals. (Adding milk to coffee or tea may partially offset this wastage.)

Menopause. Following menopause, when female hormone levels wane, calcium is leached from the bones. (Estrogen helps the bones to retain calcium.) Surgical menopause (removal of the uterus and ovaries), also precipitates calcium loss.

Use of certain drugs. Chronic use of anti-inflammatory steroids, excessive doses of thyroid medication or anticonvulsive drugs can contribute towards bone loss.

Thin, small build. Caucasian women with fine bone structure have an increased risk.
Not having enough calcium in your diet. The recommended daily intake of elemental calcium is 1,200 mg a day for adult women, between 1,500 and 1,800 mg a day if you are pregnant or lactating, and 1,500 mg a day if you have passed menopause. It is also important to include magnesium and vitamin D in your diet to help the absorption of calcium. (Many calcium supplements are now formulated with magnesium and vitamin D.)