Doctor checking BP

When we check our blood pressure, we usually do it in one arm or the other. But there is a good reason to check our blood pressure in both arms. A large difference in systolic blood pressure between arms – defined as ≥ 10 mm Hg - may be a sign of increased cardiovascular disease – and even the threat of death.

That is because when blood pressure is higher in one arm, it may be because of  narrowing in a blood vessel, called “artery”, in that arm.  The most common cause of blood vessel narrowing in the body is atherosclerosis (buildup of cholesterol); and, since atherosclerosis tends to affect blood vessels throughout the body, it can impede blood flow to vital organs like the heart and the brain, causing a heart attack or stroke. 

Mild Inter-arm systolic blood pressure...