Thyroid disease refers to a range of conditions that affect the thyroid gland, a small butterfly-shaped gland located in the neck. This gland produces hormones that regulate metabolism, energy levels, and overall body function. Common thyroid diseases include hypothyroidism, where the gland doesn't produce enough hormones, and hyperthyroidism, where it produces too much. Symptoms can vary widely, from fatigue and weight gain in hypothyroidism to anxiety and weight loss in hyperthyroidism. Diagnosis often involves blood tests to measure hormone levels, and treatment may include medication or, in some cases, surgery. Managing thyroid disease is essential for maintaining good health and ensuring the body functions properly. Regular check-ups with a healthcare provider can help monitor and manage these conditions effectively.