New blood test could tell if you'll get Alzheimer's years from now

A new blood test may be key to diagnosing disease before the condition becomes debilitating.

Neuroscientists at New York University collected and analyzed the blood samples of 125 subjects for acetyl-L-carnitine (ALC) and free-carnitine, two markers essential for brain function.

These substances help to power cells, as well as regulate glutamate, which is involved in most brain activities.

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