The thyroid gland regulates metabolism through thyroid hormones T3 and T4. Nutrition plays a crucial role in thyroid function, and certain nutrients are essential for hormone production.
Key Nutrients for Thyroid
- Iodine: Required for thyroid hormone synthesis. Found in iodized salt, seaweed, fish. Deficiency causes goiter.
- Selenium: Converts T4 to active T3. Brazil nuts, seafood, eggs.
- Zinc: Needed for thyroid hormone synthesis and receptor function.
- Iron: Required for thyroid peroxidase, the enzyme that makes thyroid hormones.
- Vitamin D: Important for immune regulation (relevant for autoimmune thyroiditis).
Goitrogens: Fact vs. Fiction
Goitrogens are substances that can interfere with thyroid function. Raw cruciferous vegetables (kale, broccoli, cabbage) contain them, but cooking deactivates most goitrogenic compounds. Most people can consume normal amounts without issue.
