More than 75 million Americans have high blood pressure, and many do not have it under control, says Apurv Khanna, MD, an associate professor of medicine at Upstate. High blood pressure can be a dangerous condition, leading to heart problems, stroke or kidney failure. Khanna says it's important to know your blood pressure. If the top number is higher than 140 or the bottom number is higher than 90, you are considered to have high blood pressure. Medications can be prescribed to help lower your blood pressure. Upstate staffs a clinic for people who have what is called "resistant" hypertension, or high blood pressure that does not respond to medication.