What is Hypothyroidism? Hypothyroidism also called low thyroid or underactive thyroid is a condition in which your thyroid gland, a small butterfly-shaped gland at the base of your neck, doesn’t produce enough hormones. When it’s healthy, your thyroid produces two different hormones: triiodothyronine (T3) and thyroxine (T4). These are used by cells throughout your body, … Continue reading Hypothyroidism