Daytime Sleepiness: Changing lifestyles are causing significant problems for people. Some people get proper sleep, yet they still feel weak and sleepy by the afternoon. Let's explain why this is the ...

A viral infection does not always end when the fever breaks. The body lingers in a strange in-between state. You wake up thinking you are fine - until you climb a flight of stairs. The legs protest.

Anemia is the most common blood disorder, affecting more than 3 million people in the US alone. Many of these people don’t know they are anemic and many never experience symptoms. What is anemia?

Short-term muscle weakness is common and can be caused by something as simple as a tough workout. However, persistent muscle weakness with no apparent cause could indicate an underlying health ...