High blood pressure: how to manage it day to day

In short

• High blood pressure usually has no symptoms, so measuring it is the only way to know.
• Left uncontrolled it raises the risk of heart attack, stroke, heart failure and kidney disease.
• Less salt, more movement, a healthy weight, less alcohol and no tobacco all lower blood pressure.
• Many people also need medicine, and it works only if you take it as prescribed.
• A very high reading with chest pain, breathlessness, weakness or trouble speaking is an emergency.

Why it matters when you feel fine

The WHO and CDC both stress that high blood pressure usually causes no symptoms. Meanwhile it keeps working on your arteries. According to the WHO, uncontrolled hypertension can harden arteries and lead to angina, heart attack, heart failure and irregular heartbeat, to stroke when arteries burst or block, and to kidney damage that can end in kidney failure. The CDC adds poorer thinking skills and a higher risk of dementia later in life, especially when it starts in midlife.

Rarely, very high pressure can cause headaches, blurred vision or chest pain, but waiting for a symptom is not a safe plan.

How it is diagnosed and what the numbers mean

A single high reading does not make the diagnosis. Blood pressure changes through the day, so clinicians measure it over multiple readings and visits, and may ask you to use a validated home monitor. The WHO describes hypertension as readings on two different days of 140 or higher for the top number, or 90 or higher for the bottom number.

• Normal: under 120 over under 80.
• Elevated: 120 to 129 over under 80.
• Stage 1: 130 to 139 or 80 to 89.
• Stage 2: 140 or higher or 90 or higher.

The NHS notes that at home, a reading of 135/85 or above is considered high. These are population categories from the CDC, not a reading of your own numbers. Your clinician sets your personal goal. The WHO describes a goal below 130/80 for people with cardiovascular disease, diabetes, chronic kidney disease or high cardiovascular risk, and below 140/90 for most others.

What lowers blood pressure besides pills

1. Cut sodium.The WHO recommends limiting salt to about 2 grams of sodium a day. The DASH plan uses a standard target of 2,300 milligrams of sodium and notes that 1,500 milligrams lowers blood pressure even further. Packaged and restaurant food usually supplies more than the salt shaker.
2. Eat the DASH way.DASH is a flexible eating plan built around vegetables, fruit, whole grains, low-fat dairy, fish and poultry, nuts, seeds and beans, with few sweets. It needs no special foods. The CDC also lists a diet low in potassium as a risk factor.
3. Move.The WHO suggests at least 150 minutes a week of moderate aerobic activity, plus strength exercises on 2 or more days.
4. Reach a healthy weight.Losing weight if you are overweight or obese helps lower pressure.
5. Limit alcohol and caffeine.The WHO suggests no more than 1 drink a day for women and 2 for men. The NHS also advises limiting caffeine from coffee, tea and cola.
6. Quit tobacco and manage stress.Smoking, vaping and nicotine pouches all count as risk factors, and long-term stress does too.

Lifestyle changes come first, and many people still need medicine on top of them. Both work together.

Medicines: the main rules

Common medicine classes include ACE inhibitors, angiotensin receptor blockers, calcium channel blockers and diuretics. Your clinician chooses based on your blood pressure, age and other conditions, and the NHS notes you may need more than one. Most are taken as a daily tablet.

• Take your medicine as prescribed, at about the same time every day, even when you feel well.
• Do not skip doses or share medicines.
• Never stop or change a dose without talking to your clinician.
• Report side effects, since there are usually alternatives.
• Ask a pharmacist before adding cold remedies, pain relievers or supplements, which can interact with blood pressure treatment.
• Refill early before trips and holidays.

What to do about a very high reading

1. Sit quietly and recheck.Rest for several minutes and measure again with your cuff on your upper arm. Stress and poor technique can both inflate a reading.
2. Check for symptoms.If a reading above 180 and/or above 120 comes with chest pain, shortness of breath, back pain, numbness, weakness, vision changes or difficulty speaking, call 911. The CDC calls this a hypertensive emergency.
3. No symptoms?A reading above 180 and/or above 120 without symptoms is severe hypertension, and the CDC advises calling your health care professional.
4. Write it down.Note the numbers, time and circumstances for your next visit. Repeated high readings call for a review of the treatment plan.

Red flags: when to call 911

Call 911 for sudden chest pain that does not go away, pain spreading to the arm, neck, jaw or back, chest pain with sweating, nausea or breathlessness, sudden weakness or numbness, or trouble speaking. With very high blood pressure, the WHO also lists severe headache, dizziness, vision changes, confusion, nosebleeds and an abnormal heart rhythm as reasons to seek care immediately. Do not drive yourself.

When to see a doctor

See your primary care provider if you think you may have high blood pressure, if you have been told you do and it is not under control, or if you have frequent headaches or blurred vision. Regular follow-up is part of the plan. A professional evaluation remains important for assessing your overall risk even if you track your numbers at home.

Questions to ask your clinician

• What blood pressure goal is right for me?
• How often should I check at home, and should I keep a log?
• What should I do if one reading is high?
• Which over-the-counter products should I avoid?
• Can my medicine schedule be simplified if it is hard to follow?

Questions and answers

Sources

1. WHO — Hypertension
2. CDC — About High Blood Pressure
3. NHLBI — DASH Eating Plan
4. NHS — High blood pressure (hypertension)

Sources checked on 29 October 2026.