The thyroid gland regulates the body’s metabolism and growth. Did you know that an imbalance in hormone levels may cause fatigue, sudden changes in weight, sweating and trouble sleeping? Thyroid disease affects an estimated 20 million Americans, many of whom are unaware. Join Melissa Mao, MD, from Chestnut Hill Hospital, to learn more about various thyroid and endocrinology disorders, symptoms and treatments. Free! Registration required. Call 215-753-2000.