WebMD.com claims that ““The thyroid is a butterfly-shaped gland in the front of the neck. It produces hormones that manage the rate of your metabolism-the system that helps your body use energy.” The majority of the time, the thyroid does its job and you do not have to stress about it. Sadly, this isn’t always the case. I found this here: "http://naturesbalance.com/the-truth-about-your-thyroid":http://naturesbalance.com/the-truth-about-your-thyroid There are several troubles associated with thyroid disease, such as depression, fatigue, and hair loss. At times, it is even mistaken for menopause. According to the Harvard Medical School, “An out-of kilter thyroid gland causes a variety of puzzling symptoms and many people and doctors mistake them for signs of another disease or normal aging. Over 12 million Americans have thyroid disease, many of whom don’t realize it.” The most prevalent type There are two kinds of thyroid disease. Hypothyroidism occurs when the thyroid produces too few of its important metabolic hormones. This version of thyroid disease is most common, taking place in about 80% of all cases. People suffering from hypothyroidism may experience brain fog, weight gain, and chills. Eventually, people can develop high cholesterol which leads to stroke and heart attacks. Hyperthyroidism signs The opposite of hypothyroidism is hyperthyroidism. This disease results from overproduction of the thyroid hormone. The symptoms of this version range from anxiety to rapid weight loss to irritability. Eventually, this can increase the risk of heart complications and bone fragility. Diagnosis According to the American Thyroid Association, “Everyone should be screened for thyroid dysfunction every five years, beginning at age 35.” All it takes is a simple blood test for prognosis. In case you are diagnosed, though, you do not have to worry. WebMD.com says that, “Your doctor will most likely prescribe thyroid hormones in the form of a pill. This typically leads to noticeable improvements within a couple of weeks. Long-term treatment can result in more energy, lower cholesterol levels, and gradual weight loss,” which means you can go on living a long and normal life. Sources "WebMD.com":http://women.webmd.com/ss/slideshow-thyroid-symptoms-and-solutions "Harvard Health Publications":http://www.health.harvard.edu/special_health_reports/Thyroid_Disease