What does iodine do in the body?

Iodine is required to make thyroid hormones, which help regulate metabolism, growth, and development. Adequate iodine is especially important during pregnancy and early childhood for brain development.

What are the best dietary sources of iodine?

Common sources include seafood, dairy products, eggs, and iodized salt. Iodine content can vary by food and local soil or farming practices.

How much iodine do adults typically need?

Many adult recommendations are around 150 mcg per day, and some people may use higher intakes under medical guidance. Needs can differ during pregnancy and breastfeeding.

What are signs of iodine deficiency?

Deficiency can lead to an enlarged thyroid (goiter) and low thyroid function. During pregnancy and infancy, inadequate iodine can impair normal growth and neurodevelopment.

Can you get too much iodine?

Yes—excess iodine can trigger thyroid dysfunction in some people, including hypothyroidism or hyperthyroidism. People with thyroid disease should discuss iodine supplements with a clinician.

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Kanıta dayalı bilgiler

Hedefe veya kategoriye göre keşfet

Iodine

Araştırma durumu güçlü·10/10

Daha yüksek puan, daha iyi bir çalışma durumuna işaret eder, ancak mutlaka etkinlik anlamına gelmez.

Iodine is an essential trace mineral, critical for thyroid hormone production, cognitive development, and metabolic health.

Eye Health Motherhood Cognitive Enhancement Essential Nutrient Bone Health Hormone Balance

Doz aralığı

150–300 µg

Once daily with food

Gelir

Take once daily, ideally with food to reduce gastrointestinal upset.

Yağda çözünmez.

En iyi zaman

Taking with the first or second meal is standard.

Açıklama

Iodine is a vital micronutrient required for the synthesis of thyroid hormones, which regulate metabolism, growth, and development. It is naturally found in seafood, dairy products, eggs, and iodized salt. Adequate iodine intake is especially important during pregnancy and infancy to support fetal and neurological development.

Avantajlar

Kanıt derecesi ile ana etkiler

Strong

Kanıtla ilgili not

Evidence for iodine’s role in preventing deficiency disorders and supporting neurodevelopment is robust. Excess intake risks are well documented.

Supports healthy thyroid function

Strong

Iodine is essential for the synthesis of thyroid hormones, which regulate metabolic rate and energy balance.

Özellikle ilgili olduğu kişiler: General · Pregnant women · Infants · Children

ODS · NIH Office of Dietary Supplements: Iodine Fact Sheet EFSA · EFSA: Tolerable upper intake level for iodine WHO · WHO: Iodine Status Worldwide

Prevents iodine deficiency disorders (IDD)

Strong

Reduces risk of goiter, hypothyroidism, mental impairment, and congenital abnormalities associated with deficiency.

Özellikle ilgili olduğu kişiler: General · Pregnant women · Infants · Children

ODS · NIH Office of Dietary Supplements: Iodine Fact Sheet WHO · WHO: Iodine Status Worldwide Cochrane · Iodine supplementation for preventing iodine deficiency disorders in children

Critical for cognitive development in infants and children

Strong

Iodine sufficiency supports neurological development and IQ; deficiency during pregnancy or early life can impair cognitive outcomes.

Özellikle ilgili olduğu kişiler: Pregnant women · Infants · Children

ODS · NIH Office of Dietary Supplements: Iodine Fact Sheet WHO · WHO: Iodine Status Worldwide Cochrane · Iodine supplementation for preventing iodine deficiency disorders in children

Güvenlik ve Uyarılar

Önemli güvenlik bilgileri ve bilinen riskler

Sadece eğitim amaçlıdır • tıbbi tavsiye değildir

Iodine is safe in recommended doses but excess intake can disrupt thyroid function and may be harmful in people with pre-existing thyroid conditions.

Uyarılar

Excessive intake can trigger hypothyroidism, hyperthyroidism, or thyroiditis, especially in those with thyroid autoimmunity.
Acute toxicity from very high doses is rare but can cause gastrointestinal and neurological symptoms.
People with autoimmune thyroid disease should use with medical supervision.
Avoid iodine supplements if you have autoimmune thyroid disease unless directed by a healthcare provider.
Do not use high-dose iodine if you are taking antithyroid medications due to risk of thyroid dysfunction.
Monitor thyroid function when taking iodine supplements with lithium or ACE inhibitors.

İlaçlarla bilinen etkileşimler

antithyroid drugs
lithium
ACE inhibitors

Kontrendikasyonlar / özel dikkat gerektiren gruplar

hypersensitivity to iodine
active thyroid disease without medical supervision

etkileşimler

Etkin madde ↔ takviye / ilaç / gıda arasındaki önemli etkileşimler

Iodine interacts with thyroid medications and several cardiovascular drugs; care is needed in patients with thyroid disorders.

Avoid excess iodine with antithyroid medications.

drug · Antithyroid medications

AvoidStrong

Neden

Combined use can counteract intended drug effects and increase risk of thyroid dysfunction.

Öneri

Avoid supplemental iodine unless specifically supervised.

ODS · NIH Office of Dietary Supplements: Iodine Fact Sheet Examine · Iodine — Examine.com

Monitor thyroid function if using lithium and iodine together.

nutrient · Lithiumorotate

MonitorModerateLithiumorotate

Neden

Lithium can alter thyroid function and amplify iodine effects.

Öneri

Check thyroid levels regularly.

ODS · NIH Office of Dietary Supplements: Iodine Fact Sheet

Monitor electrolytes with ACE inhibitors and iodine.

drug · ACE inhibitors

MonitorLimited

Neden

ACE inhibitors and excess iodine can contribute to imbalances and renal effects.

Öneri

Monitor kidney and electrolyte markers if using long-term and at higher doses.

ODS · NIH Office of Dietary Supplements: Iodine Fact Sheet

Etki mekanizmaları

Nasıl çalıştığına dair kısa açıklamalar

Thyroid hormone synthesis

Iodine is incorporated into thyroid hormones (T3, T4), which are crucial for metabolism and growth.

ODS · NIH Office of Dietary Supplements: Iodine Fact Sheet PubChem · Iodine - PubChem Compound Summary

Neurodevelopment

Adequate iodine supports proper brain development, particularly during gestation and infancy.

WHO · WHO: Iodine Status Worldwide Cochrane · Iodine supplementation for preventing iodine deficiency disorders in children

Kaynaklar ve Referanslar

Bu ifadelerin dayandığı birincil kaynaklar ve incelemeler

6 sources

ODS

NIH Office of Dietary Supplements: Iodine Fact Sheet

PubChem

Iodine - PubChem Compound Summary

Examine

Iodine — Examine.com

EFSA

EFSA: Tolerable upper intake level for iodine

WHO

WHO: Iodine Status Worldwide

Cochrane

Iodine supplementation for preventing iodine deficiency disorders in children

Son güncelleme: 13 Şubat 2026

Bu bilgiler yalnızca bilgilendirme amaçlıdır ve tıbbi tavsiye yerine geçmez.

Iodine

Açıklama

Avantajlar

Supports healthy thyroid function

Prevents iodine deficiency disorders (IDD)

Critical for cognitive development in infants and children

Güvenlik ve Uyarılar

etkileşimler

Avoid excess iodine with antithyroid medications.

Monitor thyroid function if using lithium and iodine together.

Monitor electrolytes with ACE inhibitors and iodine.

Etki mekanizmaları

Thyroid hormone synthesis

Neurodevelopment

Kaynaklar ve Referanslar

Minerals

Diğer kategoriler

Güvenlik ve Uyarılar

etkileşimler

Avoid excess iodine with antithyroid medications.

Monitor thyroid function if using lithium and iodine together.

Monitor electrolytes with ACE inhibitors and iodine.

Etki mekanizmaları

Thyroid hormone synthesis

Neurodevelopment

Kaynaklar ve Referanslar