6. Increased Bowel Movement Frequency (Hyperthyroidism)

Patients with thyroid disorders also manifest with digestive system problems, the most common of which is bowel movement irregularity. Hyperthyroidism, or the over-activity of the thyroid, causes a person’s metabolism to increase, forcing food to move quickly through the gut, thus preventing it to be digested properly. Because of this, a person with hyperthyroidism may experience frequent bowel movements and diarrhea, especially after meals.