HIGH blood pressure, also known as hypertension, is a serious public health threat globally. If uncontrolled it substantially increases the risk of disability and death from stroke, heart attacks and other cardiovascular conditions. It’s also a huge problem in South Africa – an estimated 35% of people in the country older than 15 have high blood pressure. This is expected to increase as the country’s population rapidly ages over the coming decades. NIKKIL SUDHARSANAN, Alexander von Humboldt Research Fellow at Heidelberg Institute of Global Health, University of Heidelberg JUSTINE INA DAVIES, Professor of Global Health, Institute for Applied Research, University…