Thyroid gland function The thyroid plays a crucial role in regulating your metabolism, energy levels, and overall health. Symptoms of thyroid disorders Hypothyroidism • Excessive tiredness • Unexplained weight gain • Problems with the menstrual cycle Hyperthyroidism • Palpitations • Unexplained weight loss • Frequent stools Watch Dr. Kavitha Sundaravadanam of Kauvery Hospital, one of the best Family Physicians in Chennai, explain everything you need to know about thyroid function, common issues, and tips to keep it healthy.