Heart • Learn
What Is High Blood Pressure?
High blood pressure, also called hypertension, means the force of blood pushing against your artery walls is consistently too high.
It often has no symptoms, but over time it can quietly damage the heart, brain, kidneys, blood vessels, and eyes.
Plain English
Blood pressure measures the force of blood pushing against the walls of your arteries. The top number (systolic) is the pressure when the heart beats. The bottom number (diastolic) is the pressure when the heart rests between beats.
Why it matters
Uncontrolled high blood pressure can increase the risk of heart attack, stroke, heart failure, kidney disease, vision problems, and blood vessel damage.
What the numbers mean
Normal is below 120/80. Elevated is 120–129 systolic with diastolic under 80. Stage 1 hypertension is 130–139 systolic or 80–89 diastolic. Stage 2 is 140+ systolic or 90+ diastolic. A hypertensive crisis is above 180/120 mm Hg.
How it progresses
Early pressure changes can lead to sustained hypertension, organ strain, and serious complications if uncontrolled. Monitoring, lifestyle change, and medication when needed can often slow or reduce this progression.
How diet and exercise help
Reducing sodium, eating more fruits and vegetables, choosing whole grains, limiting ultra-processed foods, and consistent activity can support healthier blood pressure alongside medical care.
Metrics to monitor
Home metrics include blood pressure readings, heart rate, weight, symptoms, sodium intake, activity, sleep, and stress. Report-based metrics include blood pressure trends, cholesterol, A1C, kidney function, electrolytes, EKG and echocardiogram findings.
Common questions
What is considered high blood pressure?
Stage 1 hypertension begins at 130–139 systolic or 80–89 diastolic. Stage 2 is 140 or higher systolic or 90 or higher diastolic.
Can high blood pressure have no symptoms?
Yes. High blood pressure often has no symptoms, which is why regular measurement is important.
When is high blood pressure an emergency?
Readings around 180/120 mm Hg or higher, especially with chest pain, severe shortness of breath, weakness, confusion, trouble speaking, fainting, or vision changes, require emergency care.
Can diet and exercise lower blood pressure?
For many people, lifestyle changes such as reducing sodium, eating heart-healthy foods, and regular activity can meaningfully support healthier blood pressure. Some people also need medication.