The singer canceled his upcoming concerts because of the brain disorder. Here’s what to know about the symptoms, prognosis ...

The FDA approved a test that can help clinicians diagnose Alzheimer's disease early on using a simple blood draw. The test ...

Semen tests analyze sperm count, shape, and how well they move to test for infertility related to sperm production and assess the quality of your sperm. You can improve a low sperm count with ...

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