Instead of becoming trapped under the skin, an ingrown eyelash may grow in the wrong direction, toward the eye. This is called trichiasis, and it can cause irritation, pain, and damage to the cornea. Injury, inflammation, or certain conditions may be responsible. Medical treatment is often necessary. Learn more here.

Medical research is reaching a new frontier with implants that can accurately spot early signs of cancer. Yet the road from laboratory to patient is long.

A new study finds a strong link between low total testosterone and chronic diseases in men of all ages, especially in the under-40 and 60-plus age groups.