Body Signs

We all notice things about our bodies that don’t seem quite right. But when are these simply harmless physical quirks and when are they signs that a visit to the doctor is in order? This comprehensive and fascinating guide covers every body part from head to toe—and everything in between—to help you decode the often mysterious messages your body sends you.

From brittle hair to hair in all the wrong places, a tingling tush, mismatched eyes, streaked nails, inverted nipples, and excessive fla...