Thyroid Supplements: Selenium, Zinc & What Helps
Key thyroid-supportive nutrients include selenium (protects thyroid, supports conversion), zinc, iron, and vitamin D. Iodine is essential but excess can worsen autoimmune thyroid disease. Supplements work best when addressing a deficiency confirmed by testing.
Evidence-based thyroid support
Targeted nutrients can support thyroid function.
- Selenium: supports T4-to-T3 conversion and may reduce antibodies in Hashimoto's.
- Zinc: needed for thyroid hormone production.
- Iron: deficiency impairs thyroid function.
- Vitamin D: low levels are common in thyroid disease; supplementing may help.
- Iodine: essential but excess worsens Hashimoto's; test before supplementing.
Know what your body needs, every day
PhaseBloom turns your cycle into a day-by-day plan for how to eat, move, rest, and care for your skin, so you stop guessing and start working with your hormones.
Know what your body needs, every day
PhaseBloom turns your cycle into a day-by-day plan for how to eat, move, rest, and care for your skin, so you stop guessing and start working with your hormones.
Frequently asked questions
Should I take selenium for my thyroid?
Selenium may help, especially in Hashimoto's, where it has been shown to reduce antibodies. Brazil nuts (1-2 daily) are a food source. Supplementation is best guided by testing.
Can too much iodine hurt my thyroid?
Yes. Excess iodine can worsen Hashimoto's and trigger thyroid dysfunction. Most people get enough from food and do not need iodine supplements.