World Hormone Day (CYMK landscape) (IMAGE) European Society of Endocrinology Caption The first World Hormone Day takes place on 24 April 2025 Credit European Society of Endocrinology Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.