When was the last time you were checked for high blood pressure? Cases have more than doubled in the past 30 years and half go untreated, study shows

• Hypertension is easily diagnosed by monitoring blood pressure, and can be treated with low-cost drugs, but nearly half the people who have it don’t know they do
• Your genes affect whether you will suffer it, but most risk factors – unhealthy diets, physical inactivity, and tobacco and alcohol consumption – are modifiable