About:

1. World Hypertension Day (WHD) is observed on 17 May every year.
2. The day aims to promote public awareness of hypertension. It also encourages all the people across the world to prevent and control this silent killer.

Theme:

1. The theme of 2020 World Hypertension Day is "Measure Your Blood Pressure, Control It, Live Longer."
2. It focuses to create awareness about raising high blood pressure (BP) in all the populations around the world. 

Background:

1. The observation of World Hypertension Day was initiated by the World Hypertension League (WHL). The day was first inaugurated in May 2005.
2. WHL is an affiliated section of the International Society of Hypertension (ISH).
3. The day aims to spread awareness about hypertension disease, early detection, prevention, and control. The main risk factor to develop cardiovascular disease is high blood pressure.