You can lower high blood pressure through a combination of dietary changes, exercise, weight loss, and, when necessary, medication. Most lifestyle changes start working within the first week, and stacking several together can drop your numbers enough to rival a single blood pressure drug. Normal blood pressure is below 120/80 mmHg. Stage 1 hypertension starts at 130/80, and stage 2 begins at 140/90.
Change How You Eat
The single most studied dietary approach for blood pressure is the DASH eating pattern, which emphasizes fruits, vegetables, whole grains, lean protein, and low-fat dairy while limiting saturated fat and sweets. In clinical trials, the DASH diet lowered systolic blood pressure (the top number) by about 4.4 mmHg within the first week, and that reduction held steady through 12 weeks of follow-up. That may not sound dramatic on its own, but it adds up when combined with other changes.
Sodium is the other big dietary lever. The American Heart Association recommends staying under 2,300 mg of sodium per day, with an ideal target of 1,500 mg for people with high blood pressure. Most Americans eat well over 3,400 mg daily, so there’s usually room to cut. Simply reducing your intake by 1,000 mg a day (roughly the amount in a single fast-food sandwich) measurably improves blood pressure and heart health. Reading nutrition labels, cooking at home more often, and choosing low-sodium versions of canned and packaged foods are the most practical starting points.
Potassium works as a natural counterbalance to sodium. It helps your kidneys flush excess sodium out through urine and relaxes blood vessel walls. The benefit is largest when sodium intake is high, but potassium still lowers blood pressure even at moderate sodium levels. The World Health Organization recommends adults get at least 3,500 mg of potassium per day from food. Bananas get all the credit, but potatoes, beans, spinach, avocados, and yogurt are all rich sources. The goal is to push the ratio of sodium to potassium closer to one-to-one in your overall diet.
Exercise: What Works Best
Regular physical activity lowers blood pressure by making your heart more efficient and your blood vessels more flexible. A large meta-analysis published in the British Journal of Sports Medicine compared every major type of exercise and found that all of them help, but some are more effective than others.
Aerobic exercise (walking, cycling, swimming) reduced systolic pressure by about 4.5 mmHg. Resistance training produced a similar drop of roughly 4.6 mmHg. Combining the two was even better, at about 6 mmHg. High-intensity interval training came in around 4 mmHg.
The surprise winner was isometric exercise, which involves holding a static position against resistance. Isometric training lowered systolic pressure by an average of 8.2 mmHg. Wall squats were the most effective single exercise tested, with reductions over 10 mmHg. A typical protocol involves holding a wall squat for two minutes, resting for two minutes, and repeating four times, three days per week. This doesn’t replace aerobic fitness, but it’s a remarkably effective addition, especially if you’re short on time or have joint limitations that make other exercise painful.
Lose Weight, Even a Little
Carrying extra weight forces your heart to pump harder to move blood through additional tissue, which raises pressure on artery walls. The relationship between weight loss and blood pressure is strikingly linear: a meta-analysis of 25 studies found that every kilogram (about 2.2 pounds) of body weight lost corresponds to roughly a 1 mmHg drop in blood pressure. Losing 10 kg, or about 22 pounds, could mean a 10-point drop in your readings. Even modest weight loss of 5 to 10 pounds produces a noticeable difference, particularly if you’re starting from a high baseline.
Cut Back on Alcohol
If you drink two or fewer alcoholic drinks per day, reducing your intake further won’t meaningfully change your blood pressure. But if you regularly drink more than that, cutting back can make a significant difference. The largest reductions were seen in people who drank six or more drinks per day and then cut their consumption by about half: their systolic pressure dropped by 5.5 mmHg and diastolic by nearly 4 mmHg. The relationship is dose-dependent, meaning the more you were drinking, the more benefit you get from reducing. There appears to be a threshold effect where the first few drinks per day don’t raise blood pressure much, but heavier consumption pushes it up sharply.
Fix Your Sleep
Poor sleep, particularly obstructive sleep apnea, is one of the most overlooked causes of high blood pressure. As many as half of all people with sleep apnea have underlying hypertension, and sleep apnea is especially common in people whose blood pressure doesn’t respond well to medication. When you stop breathing repeatedly during the night, your body releases stress hormones that constrict blood vessels and spike your pressure, sometimes dozens of times per hour.
Treating sleep apnea with a CPAP machine lowers blood pressure both at night and during the day. Meta-analyses show an average reduction of about 2 mmHg across all patients studied, but certain subgroups respond much more strongly, particularly those with resistant hypertension or severe apnea. For treatment to work, the number of breathing interruptions per hour needs to drop by more than 50%. If you snore heavily, wake up tired, or have been told you stop breathing in your sleep, getting tested is worth the effort, as it could be the reason your blood pressure isn’t budging despite doing everything else right.
When Medication Is Needed
Lifestyle changes are the foundation, but some people need medication as well, especially those with stage 2 hypertension or those who also have diabetes, kidney disease, or a history of heart attack or stroke. The four main classes of blood pressure drugs work in different ways.
- ACE inhibitors block your body from producing a chemical that constricts blood vessels, allowing them to stay wider and more relaxed.
- ARBs work similarly but block the chemical from acting on blood vessels rather than stopping its production.
- Calcium channel blockers prevent calcium from entering the muscle cells in your blood vessel walls, which lets those walls relax and open up.
- Diuretics help your kidneys remove extra salt and fluid from your body, reducing the volume of blood your heart has to pump.
Most people start with one medication, and a second may be added if the first isn’t enough on its own. These drugs typically begin lowering blood pressure within hours to days, with full effects visible within two to four weeks. Side effects vary by class but are generally mild. Finding the right medication or combination sometimes takes a few adjustments.
How Quickly You Can Expect Results
One of the most encouraging findings from blood pressure research is how fast lifestyle changes take effect. Dietary changes like DASH and sodium reduction lower blood pressure within the first week, and that initial drop accounts for most of the total benefit. Exercise typically produces measurable changes within two to four weeks of consistent activity. Weight loss is more gradual, with blood pressure improvements tracking alongside each kilogram lost over weeks to months.
Stacking these interventions multiplies the effect. Someone who adopts a DASH-style diet, reduces sodium by 1,000 mg per day, exercises regularly, and loses 10 pounds could realistically see a combined drop of 15 to 20 mmHg in systolic pressure. That’s comparable to what a single blood pressure medication achieves, and for people with stage 1 hypertension, it can be enough to bring readings back into the normal range without drugs.