Hypothyroidism is a lot more common than hyperthyroidism.
Hypothyroidism, or underactive thyroid, is a lot more common than hyperthyroidism. Failure of the thyroid to create is the most typical reason behind hypothyroidism present at birth (congenital hypothyroidism). In older children and adults, the most typical reason behind hypothyroidism is when your body’s white blood cells silently destroy the thyroid (called autoimmune thyroiditis). Proper thyroid function is required to maintain normal/average weight. If you significantly gain or slim down unintentionally as a grown-up (for example, over 10 pounds in 6 months), consult your health-care professional.