Your Bathroom Mirror Self-Exam

From the curve of your back to the spots on your skin, you can learn a lot about your health from a close inspection in the mirror. A crusty material accumulating along the eyelash line. Your eye might also feel irritated, gritty or itchy. Up to half of all adults will develop this condition, called blepharitis. Early-stage gum disease is usually reversible with a professional cleaning and an upgraded oral hygiene routine; late-stage gum disease, called periodontitis, is not, says Lauren Becker, D.D.S., a general and cosmetic dentist in New York City. Lumps or bulges while swallowing could signal thyroid trouble, including hypothyroidism (an underactive thyroid), hyperthyroidism (an overactive thyroid), thyroid cancer or a goiter (an enlarged thyroid).