A recent study looks at the links between the immune system, gut bacteria, and autism spectrum disorders. It uncovers some interesting interactions.

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.

New research examines what goes on in the brain when people perform a task in front of an audience versus when they are not being watched.