What blood pressure counts as high?
Blood pressure is given as systolic pressure (when the heart contracts) over diastolic pressure (when it relaxes). The American College of Cardiology and American Heart Association (2017) define hypertension as 130/80 mmHg or higher, with 120–129 systolic and under 80 diastolic labeled "elevated." Many other guidelines, including the Korean Society of Hypertension, use 140/90 mmHg in the office. Because some people read high only at the doctor's office (white-coat hypertension) and others only at home (masked hypertension), home monitoring matters.
Causes
Most cases are primary (essential) hypertension, with no single cause—just a mix of genetics, age, salty food, excess weight, inactivity, heavy drinking and stress. About 5–10% are secondary hypertension due to kidney disease, primary aldosteronism, obstructive sleep apnea or medications. When belly fat, blood sugar and lipid problems cluster together, it's called metabolic syndrome.
Complications
Years of high pressure thicken and stiffen blood vessels, raising the risk of stroke, heart attack, heart failure, atrial fibrillation, chronic kidney disease, eye damage and vascular dementia. In a 2016 Lancet meta-analysis of 123 trials and 610,000 people, every 10 mmHg drop in systolic pressure cut major cardiovascular events by 20%, stroke by 27%, heart failure by 28% and death from any cause by 13%.
Treatment
- Lifestyle: cutting salt, a DASH-style diet rich in fruits and vegetables, losing weight, 150+ minutes of exercise a week, limiting alcohol and not smoking are the foundation.
- Medication: ACE inhibitors or ARBs, calcium channel blockers and diuretics are the mainstays, often in combination.
- Targets: US guidelines generally aim for under 130/80 mmHg. In the SPRINT trial, aiming for systolic under 120 reduced events further but increased side effects like low blood pressure and fainting.
Taking blood pressure pills in the morning versus at night made no difference in the TIME trial (2022), so pick the time you'll stick with. If pressure drops too far on standing, see orthostatic hypotension. Cholesterol is the other major risk factor—see LDL cholesterol.
This article is general health information and is not a substitute for diagnosis or treatment. If symptoms persist, see a doctor.
FAQ
- Is 130/80 high blood pressure?
- Under US ACC/AHA guidelines, yes—130/80 or higher is stage 1 hypertension, though many people at that level start with lifestyle changes rather than medication.
Sources reviewed: 2026-10-25
References
- Ettehad, D., et al. (2016). Blood pressure lowering for prevention of cardiovascular disease and death. Lancet, 387(10022), 957–967.
- SPRINT Research Group. (2015). A randomized trial of intensive versus standard blood-pressure control. New England Journal of Medicine, 373(22), 2103–2116.
- Kim, H. C., et al. (2019). 2018 Korean Society of Hypertension guidelines for the management of hypertension. Clinical Hypertension, 25, 20.