Awareness Day

World Thyroid Day

May 25, 2026 Recurs yearly

A healthcare professional performs a routine thyroid examination on an adult patient.

2026 Theme

Thyroid and Nutrition

Campaign Description

World Thyroid Day, observed annually on 25 May, is a global health awareness campaign dedicated to increasing understanding of thyroid disorders, encouraging early recognition of symptoms, promoting timely diagnosis and treatment, and advocating for better thyroid care worldwide. Established in 2008 by the Thyroid Federation International and supported by international thyroid organizations, the day also forms part of International Thyroid Awareness Week.

Theme Focus

The 2026 theme, "Thyroid and Nutrition," highlights the essential connection between nutrition and thyroid health. It emphasizes the importance of adequate intake of key nutrients, including iodine, selenium, iron, and zinc for healthy thyroid function, while promoting evidence-based dietary guidance to support the prevention, diagnosis, and management of thyroid disorders and improve overall well-being.

Key Priorities

  • Increase awareness of the relationship between nutrition and thyroid health
  • Promote adequate iodine intake while avoiding inappropriate excess supplementation
  • Highlight other relevant micronutrients, including selenium, zinc, iron and vitamin D
  • Improve understanding of nutrition in people living with thyroid conditions
  • Consider changing dietary patterns and lifestyles, particularly among younger people
  • Recognize that nutritional needs vary across the life course
  • Give attention to thyroid health during pregnancy, childhood and older age
  • Counter misinformation about “thyroid diets” and unproven supplements
  • Encourage appropriate thyroid evaluation and testing when clinically indicated
  • Promote evidence-based management of thyroid disorders
  • Improve public and healthcare-professional awareness of thyroid disease
  • Address inequalities in access to nutritious food, healthcare and thyroid diagnosis and treatment

Key Concepts

  • Thyroid
  • Thyroid gland
  • Thyroid health
  • Thyroid hormones
  • T3
  • T4
  • Thyroxine
  • Triiodothyronine
  • TSH
  • Nutrition
  • Micronutrients
  • Iodine
  • Iodized salt
  • Selenium
  • Zinc
  • Iron
  • Vitamin D
  • Thyroid hormone synthesis
  • Metabolism
  • Hypothyroidism
  • Hyperthyroidism
  • Hashimoto's thyroiditis
  • Graves' disease
  • Goiter
  • Thyroid nodules
  • Thyroid function tests
  • Thyroid antibodies
  • Nutritional deficiency
  • Dietary patterns
  • Dietary supplements
  • Pregnancy and thyroid health
  • Childhood thyroid health
  • Endocrine health

Campaign Resources & Support

View Awareness Calendar