5.Cause: Heart Problems
The more blood your heart pumps per minute, the higher your blood pressure. Certain medications, along with hormone problems, heart damage, or misfiring electrical signals, can make your heart beat too slowly, which lowers that pressure. Or it could be that your heart is not as strong as it used to be because of a heart attack, heart failure, or problems with the valves, and so doesn’t pump as much blood per beat.
6.Cause: Standing Quickly
Normally when you stand suddenly, your body sends a signal to your brain that says «Hey! We just dropped a bunch of blood down to the legs and belly, and we need to pump some more back upstairs before you get dizzy and pass out!» But sometimes, your brain doesn’t get the message quickly enough and you start to feel lightheaded. You might even faint. Your doctor might call this problem «orthostatic hypotension» or «vasovagal syncope.»
