How high is too high?
There’s no magic number that means your blood pressure is too high – only your doctor can tell you. In general it’s considered elevated if it’s consistently more than 140/90. But elevated blood pressure (also called hypertension) doesn’t necessarily mean you’re at risk of heart disease. And, conversely, your doctor may think you’re at risk even if only one of the two numbers is elevated.
In weighing up your risk your doctor will consider other factors such as your age, gender, cholesterol levels, ethnicity, family history, weight, and whether you’re a smoker.