World Thyroid Day (WTD) is observed on May 25.

Important Days | Dated: 28 May 2025

World Thyroid Day (WTD) is observed annually across the globe on May 25 to raise global awareness about thyroid disorders and emphasize early detection and treatment.

🎯 Key Highlights:

  • - This day is part of International Thyroid Awareness Week (ITAW), held from May 25 to 31.
  • - The blue paisley ribbon is the symbol for thyroid awareness. The paisley design was chosen because it resembles a cross-section of thyroid follicles, representing the gland's structure.

💡 Other Important Facts:

  • (i) The European Thyroid Association (ETA) established World Thyroid Day (WTD) in 2008, choosing May 25 to coincide with the founding date of the ETA in 1965.
  • (ii) In 2010, the American Thyroid Association (ATA), the Latin American Thyroid Society (LATS), and the Asia & Oceania Thyroid Association (AOTA) officially endorsed WTD during the International Thyroid Congress held in Paris, France.
  • (iii) The first WTD was observed by ATA, ETA, AOTA, and LATS on May 25, 2011.

📚 Test Your Knowledge:

Recently, World Thyroid Day (WTD) is observed globally on which date every year?

Correct Answer: May 25

🚀 Quick Recap: