The start of the new year means more people heading to the gym and increasing their risk of picking up and spreading germs. New research found bacteria lurking under fingernails long after a workout.

3. Potentially "fatal" germs can lurk under hospital workers' nails. Ugh, just when you think hospitals are safe places--this unsettling research notes that dirty fingernails could be the source of ...

Even after handwashing, bacteria often remain under the nails. They’re bold and glamorous, but beneath them lie bacteria and fungi that could harm your health. According to Jeffrey Kaplan, a biology ...

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Most of us think of our bodies as a single organism—just us. But the story is more complicated. Trillions of bacteria, fungi, ...