High blood pressure
High blood pressure, or hypertension, means the force of blood against artery walls stays high enough over time to raise the risk of stroke, heart disease, kidney disease, and other problems.
What high blood pressure is
High blood pressure is a long-term condition in which blood pushes against artery walls with too much force. A single high reading does not always mean a person has hypertension, but repeated high readings matter because arteries, the heart, brain, kidneys, and eyes can be affected over time.
What the numbers mean
Blood pressure is written as two numbers, measured in millimeters of mercury, or mm Hg. The systolic number reflects pressure when the heart contracts. The diastolic number reflects pressure when the heart rests between beats. Clinicians interpret the numbers together, along with age, medical history, medicines, and overall cardiovascular risk.
Why it is called silent
High blood pressure is sometimes called silent because it usually causes no obvious symptoms. Headaches, dizziness, or nosebleeds are not reliable warning signs for most people. That makes accurate measurement important at checkups, pharmacies, community screenings, or home when a clinician recommends home monitoring.
How it is measured
A good reading depends on technique. The cuff should fit the arm, the person should be seated and rested, feet on the floor, arm supported at heart level, and talking should be avoided during the measurement. Home monitors can be useful, but they should be validated, used correctly, and compared with clinic readings when possible.
Risks and causes
Risk can rise with age, family history, higher body weight, high-sodium eating patterns, low potassium intake, physical inactivity, alcohol use, tobacco use, poor sleep, stress, kidney disease, diabetes, and some medicines. Air pollution and other environmental exposures can also contribute to cardiovascular risk at the population level.
Treatment and control
Treatment usually combines everyday habits and, for many people, medicine. Plans may include reducing sodium, eating more fruits and vegetables, regular physical activity, limiting alcohol, stopping tobacco use, improving sleep, managing weight when relevant, and taking prescribed blood-pressure medicines consistently. The right target and medicine choice depend on the person.
When blood pressure is urgent
Very high blood pressure together with symptoms such as chest pain, shortness of breath, severe headache, confusion, weakness, vision changes, or signs of stroke needs urgent medical attention. People should not try to handle possible stroke, heart attack, or organ-damage symptoms by waiting for a home reading to improve.
Why it matters
High blood pressure matters because it is common, measurable, and often treatable before a crisis occurs. Better detection and control can prevent strokes, heart attacks, heart failure, kidney damage, vision loss, and pregnancy complications. It is one of the clearest examples of prevention turning a quiet risk into something people can act on.