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More than a third of the women who experienced menopause symptoms were in their 60s and 70s, suggesting that menopause may last longer than doctors had expected.

The study did not look at whether gradually stopping hormone pills might ease symptoms, The Associated Press reports.

The survey results were published in the Journal of the American Medical Association.

Anorexia and Brain Chemistry Researchers may be closer to understanding the neurological roots of anorexia.

A small study published in the journal Biological Psychiatry finds evidence that anorexia may be explained by abnormal activity of a certain brain chemical.

In the study, researchers used brain-imaging technology on 10 women with anorexia and 12 women who do not have the illness.

They found that the women with anorexia had overactive dopamine receptors in one part of their brains.

Dopamine is associated with regulating pleasure and positive and negative reinforcement, The Associated Press reports.

The researchers say the irregular dopamine activity could mean that the anorexic women don't feel "rewarded" for losing weight and so are compelled to lose more.

Although they could not explain what causes the problem with dopamine receptors, the researchers say their findings ultimately c...

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