If you have high blood pressure, certain everyday habits, foods, and even common medications can push your numbers higher without you realizing it. Blood pressure is classified as Stage 1 hypertension at 130/80 mmHg and Stage 2 at 140/90 mmHg or above, so even small, avoidable spikes matter. Here’s what to steer clear of and why.
Don’t Overdo Sodium
Sodium is the single biggest dietary offender for people with high blood pressure. It causes your body to hold onto extra water, which increases the volume of blood pushing against your artery walls. The American Heart Association sets a general cap at 2,300 mg per day but recommends an ideal limit of less than 1,500 mg for most adults, especially those with hypertension. For context, a single teaspoon of table salt contains about 2,300 mg.
The tricky part is that most excess sodium doesn’t come from a salt shaker. It hides in restaurant meals, canned soups, deli meats, frozen dinners, bread, and condiments like soy sauce and salad dressing. Reading nutrition labels and cooking more meals at home are the most effective ways to stay under the limit.
Don’t Take Certain OTC Medications
Some of the most common drugstore medications can raise blood pressure significantly. Nonsteroidal anti-inflammatory drugs (ibuprofen, naproxen) cause your body to retain sodium and water, counteracting what blood pressure medications are trying to do. Nasal decongestants containing pseudoephedrine or phenylephrine work by narrowing blood vessels in your sinuses, but they narrow blood vessels everywhere else too.
Cough and cold combination products are especially risky because they often bundle a decongestant with other active ingredients, and you may not notice it on the label. If you have high blood pressure, check the “Drug Facts” panel on any OTC product before buying it. Acetaminophen is generally a safer choice for pain relief, and saline nasal sprays can substitute for decongestants in many situations.
Don’t Lift Extremely Heavy Weights
Exercise is one of the best things you can do for blood pressure overall, but one specific type demands caution: maximal-effort weightlifting. When professional weight lifters bench pressed at 80% to 100% of their maximum capacity, researchers recorded average blood pressure spikes to 320/250 mmHg, with one individual hitting 480/350 mmHg. Those are extreme, dangerous numbers.
This doesn’t mean you should skip the gym. Moderate resistance training with lighter weights and higher repetitions is safe and beneficial for most people with hypertension. The problem is straining against very heavy loads while holding your breath, a combination that sends blood pressure soaring. If you lift weights, breathe steadily through each repetition and avoid maxing out. Walking, cycling, swimming, and other aerobic activities are particularly effective at lowering resting blood pressure over time.
Don’t Drink Excessively
Alcohol has a dose-dependent relationship with blood pressure, meaning the more you drink, the higher it goes. For people with hypertension who choose to drink, the recommended ceiling is one drink per day for women and two for men. A “drink” means 12 ounces of beer, 5 ounces of wine, or 1.5 ounces of spirits.
Women absorb more alcohol per drink than men due to differences in body size and enzyme activity, which is why the limit is lower. If you regularly exceed one to two drinks per day, cutting back should be part of your blood pressure management plan from the start. Binge drinking is particularly harmful because it creates sharp, repeated spikes that stress your blood vessels.
Don’t Smoke or Vape
Nicotine raises blood pressure every time it enters your bloodstream, regardless of how it gets there. It triggers your adrenal glands to release stress hormones that increase heart rate, constrict blood vessels, and force your heart to pump harder. This happens with cigarettes, cigars, vapes, nicotine pouches, and patches alike.
With chronic exposure, this sustained activation of your stress response promotes lasting hypertension, damages the inner lining of your arteries, and accelerates the buildup of plaque. Quitting nicotine in all forms is one of the highest-impact changes you can make for blood pressure and overall cardiovascular health.
Don’t Skimp on Sleep
During normal sleep, your blood pressure naturally dips by 10% to 20%. When you consistently sleep fewer than seven hours, your blood pressure stays elevated for a longer portion of each 24-hour cycle, and the cumulative effect raises your baseline over time. The CDC identifies seven hours per night as the minimum most adults need to protect heart health.
Sleep apnea deserves special attention. This condition causes your airway to collapse repeatedly during sleep, dropping your oxygen levels and triggering surges in blood pressure each time you partially wake up. It’s extremely common in people with hypertension and often goes undiagnosed. Loud snoring, gasping during sleep, and feeling exhausted despite a full night in bed are the hallmark signs worth investigating.
Don’t Ignore Licorice and Certain Supplements
Real licorice (not the artificially flavored kind) contains an active compound that blocks an enzyme in your kidneys responsible for keeping cortisol levels in check. When cortisol builds up, it mimics a hormone that causes sodium retention and raises blood pressure. Meta-analyses covering thousands of patients found that chronic licorice consumption raises systolic blood pressure by about 5.5 mmHg and diastolic by 1.7 to 3.2 mmHg. As little as 50 grams of licorice per day (roughly two ounces) can produce a measurable increase within two weeks.
Licorice extract also shows up in some herbal teas, traditional remedies, and throat lozenges, so check ingredient lists. Other herbal supplements worth being cautious about include any product containing ephedra or ma huang, which acts as a stimulant and constricts blood vessels. Always tell your healthcare provider about supplements you take so they can flag interactions with blood pressure medications.
Don’t Rely on Inaccurate Readings
Managing high blood pressure effectively starts with measuring it correctly, and several common mistakes can throw your numbers off enough to mislead you or your doctor.
- Crossing your legs while seated compresses blood vessels and raises your reading.
- Letting your arm hang at your side instead of resting it on a table at chest height inflates the number.
- Talking during the reading can add several points.
- Eating, drinking caffeine or alcohol, smoking, or exercising within 30 minutes of a reading can all push it higher. Caffeine alone can spike blood pressure by about 5/2 mmHg in the short term.
- Placing the cuff over clothing instead of bare skin reduces accuracy.
- Skipping the rest period before measuring matters more than most people realize. Sit with your back supported and feet flat on the floor for at least five minutes first.
White coat syndrome, where blood pressure reads high in a clinical setting but is normal at home, affects roughly one in three people. Home monitoring with a validated upper-arm cuff gives you and your doctor a much clearer picture of your true blood pressure pattern.