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Tips on Bone Health

Bone density test: Measure your risk of osteoporosis
Years ago, the only time osteoporosis -- the disease that causes bones to become more fragile and likely to break could be detected was after someone broke a bone. By then, however, his/her bones might already be quite weak. Today a bone density test, also called densitometry, can determine if someone has osteoporosis or is at risk of osteoporosis before s/he break any bones.
What is a bone density test?
A bone density test uses special X-rays to measure how many grams of calcium and other bone minerals -- collectively known as bone mineral content -- are packed into a segment of bone. The higher the mineral contents, the denser the bones are. And the denser the bones, the stronger they are and the less likely they are to break. Doctors use a bone density test to determine if someone has, or is at risk of, osteoporosis.
Bone density tests are not the same as bone scans. Bone scans require an injection before- Depression appears to further increase the likelihood that girls with anorexia will develop the bone-thinning disease osteoporosis, according to a report from Australia.
Individually, both anorexia and depression have been linked to osteoporosis. This led Dr. Jerzy Konstantynowicz, from The University of Melbourne and colleagues to think that perhaps that the presence of both disorders would increase the risk of osteoporosis to a greater extent than anorexia alone.
As they report in the Journal of Clinical Endocrinology & Metabolism, the researchers evaluated bone mineral density (BMD) in 45 girls with anorexia nervosa, including 14 who also had depression.
Consistent with previous hand and are usually used to detect fractures, cancer, infections and other abnormalities in the bone.
Who should have a bone density test?
The older you get, the higher your risk of osteoporosis because your bones become weaker as you age. Your race also makes a difference.
Other risk factors for osteoporosis include low body weight, a personal history of fractures, a family history of osteoporosis and using certain medications that can cause bone loss.
What are the pros and cons of the bone Density test?
Bone density testing is a valuable tool in the diagnosis of osteoporosis and is a fairly accurate predictor of risk of fractures. Significant differences in the various testing methods do exist, however. Central devices are more accurate, but cost significantly more than peripheral devices do.
reports, BMD in both groups was reduced compared that seen in the general population, the investigators point out. Moreover, subjects with depression had significantly lower values than those without depression.
Further analysis showed that the severity of depression was independently linked to BMD.
"To our knowledge, this is the first demonstration of a quantitative association between BMD and depression in anorexic adolescent girls," the researchers state.
They say that studies are now needed to see if antidepressants might "alleviate the deficit in BMD.”
Source: Journal of Clinical Endocrinology & Metabolism, September 2005.