May 17 is World Hypertension Day Internationally 17th May is observed as World Hypertension Day. According to Global Burden of Disease Study blood pressure tops the list of risk factors for death and disability globally. In developing nations around 640 million people suffer from this disease. Hypertension is common around the world and many people are unaware that they suffer from this modern epidemic. It is considered to be a silent killer because it has no obvious symptoms. Hence this World Hypertension Day efforts are being focused so as to improve prevention and control hypertension by creating awareness about the diseases.