Roughly 5 percent of the U.S. population over the age of 12 has some form of hypothyroidism (an underactive thyroid), and some estimates suggest up to 40 percent of the population suffers from at least some level of underactive thyroid. Women — especially older women — are the most susceptible group for developing hypothyroidism. People … Continue reading Hypothyroidism (Underactive Thyroid) Symptoms, Causes & Best Diet