Hypothyroidism
- Underactive thyroid: Occurs when the thyroid gland doesn’t produce enough thyroid hormone.
- Symptoms: May not be noticeable in the early stages.
- Health problems: Untreated hypothyroidism can lead to other health issues, such as high cholesterol and heart problems.
- Diagnosis: Blood tests are used to diagnose hypothyroidism.
- Treatment: Thyroid hormone replacement therapy is generally effective and safe once the correct dosage is determined.
Symptoms
- Tiredness
- Increased sensitivity to cold
- Constipation
- Dry skin
- Weight gain
- Puffy face
- Hoarse voice
- Coarse hair and skin
- Muscle weakness
- Muscle aches, tenderness, and stiffness
- Heavier or irregular menstrual cycles
- Thinning hair
- Slowed heart rate (bradycardia)
- Depression
- Memory problems
- Infants:
- Feeding problems
- Poor growth and weight gain
- Jaundice
- Constipation
- Poor muscle tone
- Dry skin
- Hoarse crying
- Enlarged tongue
- Umbilical hernia
- Children and Teens:
- Similar symptoms to adults
- Poor growth
- Delayed development of permanent teeth
- Delayed puberty
- Poor mental development
Causes
- Autoimmune diseases: Hashimoto’s disease is the most common cause, where the immune system attacks the thyroid gland.
- Thyroid surgery: Removal of all or part of the thyroid gland can lead to hypothyroidism.
- Radiation therapy: Radiation treatment to the head and neck can damage the thyroid gland.
- Thyroiditis: Inflammation of the thyroid gland can disrupt hormone production.
- Medications: Certain medications, such as lithium, can interfere with thyroid hormone production.
- Congenital hypothyroidism: Some babies are born with an underactive or absent thyroid gland.
- Pituitary disorders: Problems with the pituitary gland can affect thyroid hormone production.
- Pregnancy: Hypothyroidism can develop during or after pregnancy.
- Iodine deficiency: Insufficient iodine intake can lead to hypothyroidism.
Risk Factors
- Gender: Women are more likely to develop hypothyroidism than men.
- Family history: A family history of thyroid disease increases the risk.
- Autoimmune diseases: Having an autoimmune disease, such as Type 1 diabetes or celiac disease, can increase the risk.
- Previous treatment: People who have received treatment for hyperthyroidism, such as radioactive iodine or surgery, are at a higher risk.
- Radiation exposure: Radiation therapy to the neck or upper chest can damage the thyroid gland.
- Thyroid surgery: Having had thyroid surgery can increase the risk of hypothyroidism.
Complications
- Goiter: An enlarged thyroid gland can cause swallowing or breathing difficulties.
- Heart problems: Increased risk of heart disease and heart failure due to elevated LDL cholesterol levels.
- Peripheral neuropathy: Damage to the peripheral nerves can lead to pain, numbness, tingling, and loss of sensation in the extremities.
- Infertility: Can interfere with ovulation and fertility.
- Birth defects: Untreated hypothyroidism during pregnancy can increase the risk of birth defects.
- Myxedema coma: A life-threatening condition characterized by extreme cold intolerance, drowsiness, and unconsciousness.
Prevention
- Avoid processed foods: Chemicals in processed foods can interfere with thyroid hormone production.
- Limit soy: Soy can also disrupt hormone production.
- Quit smoking: Smoking can damage the thyroid gland and increase the risk of thyroid disorders.
- Reduce stress: Stress can contribute to various health problems, including thyroid disease.
- Eat healthy fats: Healthy fats, such as olive oil, can support thyroid gland function.
- Exercise regularly: Physical activity can help regulate hormone levels.
When to see a doctor
- Unexplained fatigue: If you are feeling tired for no apparent reason, it could be a sign of hypothyroidism.
- Other symptoms: If you are experiencing any of the other symptoms of hypothyroidism, such as weight gain, cold intolerance, constipation, or dry skin, it’s important to consult with a healthcare professional.
- Monitoring thyroid hormone medication: If you are taking thyroid hormone medication, follow your healthcare provider’s advice on how often you need medical appointments. Regular check-ups are important to ensure your medication dosage is correct and your condition is well-managed.
