What happens when you have no thyroid?

When someone has no thyroid gland or has undergone a complete thyroidectomy (surgical removal of the thyroid gland), they will become hypothyroid because the thyroid gland is responsible for producing thyroid hormones essential for regulating metabolism and other bodily functions. Here's what happens when someone has no thyroid:

1. Hypothyroidism: Without a thyroid gland, the body cannot produce thyroid hormones (T3 and T4) on its own. As a result, the individual becomes hypothyroid, meaning they have an underactive thyroid. This can lead to a variety of symptoms, including fatigue, weight gain, cold intolerance, constipation, dry skin, hair loss, muscle weakness, and depression.

2. Thyroid Hormone Replacement Therapy: Since the body cannot produce thyroid hormones naturally, individuals who have had their thyroid gland removed need to take synthetic thyroid hormone medication for the rest of their lives. The most common medication is levothyroxine (Synthroid, Levoxyl, etc.), which provides the body with the necessary thyroid hormones to maintain metabolism and prevent hypothyroid symptoms.

3. Regular Monitoring: People without a thyroid gland need regular monitoring of their thyroid hormone levels through blood tests to ensure that their medication dosage is appropriate. Adjustments to medication may be needed over time based on changes in hormone levels or changes in the individual's health status.

4. Complications: Without proper thyroid hormone replacement therapy, hypothyroidism can lead to serious complications over time, including cardiovascular problems, infertility, mental health issues, and myxedema coma, a rare but life-threatening condition characterized by severely low thyroid hormone levels.

5. Diet and Lifestyle Modifications: Some individuals without a thyroid gland may need to make dietary and lifestyle modifications to manage their condition effectively. This may include following a healthy diet, exercising regularly, managing stress, and avoiding certain medications or supplements that can interfere with thyroid hormone absorption or metabolism.

Overall, living without a thyroid gland requires lifelong management with thyroid hormone replacement therapy and regular medical monitoring to ensure optimal health and well-being. With proper treatment and care, most individuals can lead normal, healthy lives despite not having a thyroid gland.