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For Your Health: Breakthrough Blood Test for Alzheimer's in Sight

A breakthrough blood test may soon be able to detect Alzheimer's disease, say U.S. scientists:

Florida researchers said Thursday that they tried a new way of testing the immune system's response to abnormal substances, known as antigens, released during diseases like Alzheimer's and identified a pattern of antibodies specific to Alzheimer's.

The method could also be used to test for early stages of other diseases, including multiple sclerosis, neurological disorders such as Parkinson's disease and various forms of cancer.

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The U.S. Department of Health and Human Services is announcing a proposal to change the fluoride level in drinking water:

Fluoride in drinking water — credited with dramatically cutting cavities and tooth decay — may now be too much of a good thing. It's causing spots on some kids' teeth.

A reported increase in the spotting problem is one reason the federal government will announce Friday it plans to lower the recommended limit for fluoride in water supplies — the first such change in nearly 50 years.

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New research says that men can actually smell a chemical in women's emotional tears that turns them off!:

If a crying woman's red nose isn't a big enough turnoff to a man, a surprising experiment found another reason: Tears of sadness may temporarily lower his testosterone level.

Those tears send a chemical signal as the man gets close enough to sniff them — even though there's no discernible odor, say researchers from Israel's Weizmann Institute of Science.

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