High blood pressure comes down through a combination of lifestyle changes and, when needed, medication. For many people, adjustments to diet, exercise, and body weight can lower readings by 5 to 15 mmHg or more, sometimes enough to avoid or reduce medication. The approach that works best depends on how high your numbers are and what’s driving them up.
For context, normal blood pressure is below 120/80 mmHg. Stage 1 hypertension starts at 130/80, and stage 2 begins at 140/90. Even small reductions matter: dropping your systolic pressure (the top number) by just 5 mmHg significantly cuts your risk of heart attack and stroke.
Cut Sodium, Add Potassium
Sodium is the single most impactful dietary factor in blood pressure. It pulls water into your bloodstream, increasing the volume of fluid your heart has to pump. The 2025 guidelines from the American Heart Association set the ceiling at 2,300 mg of sodium per day, with an ideal target of under 1,500 mg for most adults. To put that in perspective, one teaspoon of table salt contains about 2,300 mg, and the average American eats over 3,400 mg daily.
Most excess sodium doesn’t come from the salt shaker. It’s hiding in bread, deli meats, canned soups, frozen meals, restaurant food, and condiments like soy sauce and salad dressings. Reading nutrition labels and cooking more meals at home are the two most effective ways to cut intake. Even a partial reduction helps: going from 3,400 mg to 2,300 mg per day can lower systolic pressure by several points.
Potassium works as sodium’s counterbalance. It relaxes blood vessel walls and helps your kidneys flush out excess sodium through urine. This effect is especially strong in people who are salt-sensitive. Adults need 2,600 to 3,400 mg of potassium per day (depending on sex), but most people fall short. Good sources include bananas, potatoes, sweet potatoes, spinach, beans, avocados, yogurt, and salmon. Getting potassium from food is preferable to supplements, which can cause problems if you have kidney disease or take certain medications.
Exercise Lowers Pressure Consistently
Regular aerobic exercise reduces systolic pressure by 4 to 10 mmHg and diastolic pressure by 5 to 8 mmHg in people with hypertension. That’s comparable to what some blood pressure medications deliver. The effect kicks in within a few weeks of consistent activity and lasts as long as you keep it up.
You don’t need intense workouts. Brisk walking, cycling, swimming, and dancing all count. The general target is 150 minutes per week of moderate-intensity activity, which breaks down to about 30 minutes on most days. Resistance training (weight lifting, bodyweight exercises) also helps, though the evidence is strongest for aerobic exercise. If you’ve been sedentary, even 10-minute walks after meals make a measurable difference as a starting point.
Lose Weight, Even a Little
Carrying extra weight forces your heart to work harder with every beat, and it promotes hormonal changes that tighten blood vessels. The relationship between weight loss and blood pressure is remarkably linear: roughly 1 mmHg of blood pressure reduction for every kilogram (about 2.2 pounds) you lose. Some studies in men with hypertension found reductions closer to 3 mmHg per kilogram lost.
This means losing even 10 pounds can drop your blood pressure by 5 to 7 points. You don’t need to reach an “ideal” weight to see benefits. For people who are significantly overweight, the blood pressure gains from the first 15 to 20 pounds of weight loss are often the most dramatic.
Alcohol, Caffeine, and Stress
Alcohol raises blood pressure in a dose-dependent way. One drink occasionally has minimal impact, but regular heavy drinking is a common and underrecognized driver of hypertension. If you drink daily, cutting back can lower systolic pressure by 2 to 4 mmHg within weeks.
Caffeine causes a short-term spike in blood pressure, typically lasting a few hours. For most people who drink coffee regularly, the body adapts and the long-term effect is small. But if your readings are borderline, it’s worth checking whether your morning coffee is temporarily pushing you into hypertensive range.
Chronic stress keeps your body in a state of heightened alertness, with stress hormones that constrict blood vessels and speed up heart rate. The blood pressure effects of stress are hard to quantify in studies because stress is so individual, but the biological mechanism is clear. Regular stress-reducing practices like deep breathing, meditation, adequate sleep, and time outdoors can meaningfully lower resting blood pressure over time.
Magnesium’s Modest but Real Effect
Magnesium helps blood vessels relax, and many people don’t get enough of it. A large meta-analysis of randomized trials found that magnesium supplementation at a median dose of 368 mg per day for about three months lowered systolic pressure by 2 mmHg and diastolic by about 1.8 mmHg. That’s a modest effect on its own, but it adds up when combined with other changes.
Good dietary sources include dark leafy greens, nuts, seeds, whole grains, and dark chocolate. If your diet is low in these foods, a supplement in the 300 to 400 mg range is reasonable, though it’s worth checking with your provider if you have kidney issues.
When Lifestyle Changes Aren’t Enough
If your blood pressure is at stage 2 (140/90 or higher), or if you have stage 1 hypertension along with other cardiovascular risk factors, medication is typically part of the plan from the start. Lifestyle changes still matter, but they may not bring the numbers down far enough on their own.
Blood pressure medications work through a few basic strategies. Some reduce the volume of fluid in your bloodstream by helping your kidneys release more water and salt. Others relax and widen blood vessels so blood flows with less resistance. A third group slows the heart rate or reduces how forcefully the heart contracts, lowering the pressure generated with each beat. Some medications block a hormonal system that tightens blood vessels and retains salt.
Most people start with one medication and adjust from there. It often takes a few weeks to see the full effect, and some trial and error with types or doses is normal. Many people eventually find a single daily pill that controls their numbers well, especially when paired with the dietary and exercise changes described above.
Combining Strategies Gets the Best Results
No single change is a silver bullet, but the effects stack. Cutting sodium by 1,000 mg per day, exercising regularly, losing 10 pounds, and increasing potassium intake could collectively lower systolic pressure by 15 to 25 mmHg. For someone at 145/92, that combination could bring them into normal range without medication.
The changes that tend to produce the fastest visible results are sodium reduction and exercise, both of which can shift readings within one to two weeks. Weight loss and dietary pattern changes (like adopting the DASH diet, which emphasizes fruits, vegetables, whole grains, and lean protein) take a bit longer but produce some of the most durable improvements. Tracking your blood pressure at home with an automatic cuff gives you real-time feedback on what’s working, which makes it easier to stay motivated.