Fatigue...Weight gain...Depression...Hair loss... 

They are common symptoms to an underlying health problem, one that leaves many women asking "Do I have an underactive thyroid?" The answer is -- it's quite possible. 

An underactive thyroid can cause many health problems. Hypothyroidism is more common than you might think -- up to 15 percent of women older than age 70 are affected, and doctors recommend that women older than 50 be screened annually.

Women are about 10 times more at risk than men to have the condition. All newborns are screened for congenital hypothyroidism. The condition can cause delayed mental development in newborns and a host of other health complications for older people. Read on to learn more about symptoms, treatments and factors that influence your risk.