Low blood pressure, defined as a reading below 90/60 mmHg, can often be managed with simple changes to your diet, hydration, and daily habits. For many people, low blood pressure causes no problems at all. But if you’re dealing with dizziness, lightheadedness, or fainting spells, several strategies can help bring your numbers up and keep symptoms at bay.
Drink More Water
Dehydration is one of the most common and easily fixable causes of low blood pressure. Water increases the total volume of blood circulating through your body, which directly raises pressure against your artery walls. There’s no single magic number for how much to drink, but most people with low blood pressure benefit from drinking significantly more than they currently do, especially in hot weather or after exercise.
Alcohol works in the opposite direction. Even moderate amounts lower blood pressure and dehydrate you, so cutting back on alcohol can make a noticeable difference if your readings run low.
Increase Your Salt Intake
Salt gets a bad reputation in most health advice, but for people with low blood pressure, it’s genuinely helpful. Sodium causes your body to retain water, which boosts blood volume. Doctors generally recommend at least 6 grams of salt per day for people with low blood pressure, roughly double the amount typically suggested for the general population.
You can increase salt through your regular diet by adding it to meals, eating broth-based soups, or snacking on salted nuts and olives. This advice applies specifically to people whose blood pressure is too low. If you have kidney disease, heart failure, or other conditions where salt restriction matters, talk to your doctor before making changes.
Adjust How and When You Eat
Blood pressure commonly drops after meals, a condition called postprandial hypotension. This happens because your body diverts blood to your digestive system, temporarily reducing pressure elsewhere. Large, carbohydrate-heavy meals make the drop worse.
A few practical changes can help. Eating six smaller meals throughout the day instead of three large ones keeps your blood pressure more stable. Choosing meals that are lower in carbohydrates reduces the post-meal dip. Drinking 12 to 16 ounces of water about 15 minutes before eating also helps by temporarily increasing blood volume before digestion pulls blood away. A short 10-minute walk after eating can keep circulation moving, and some people find that a caffeinated drink before breakfast or lunch helps counteract the drop.
Wear Compression Stockings
When you stand up, gravity pulls blood down into your legs and feet. For people with low blood pressure, this pooling effect can cause dizziness or fainting. Compression stockings counteract this by gently squeezing the legs and pushing blood back toward the heart.
Experts in autonomic disorders recommend waist-high compression stockings rated at 20 to 30 mmHg or 30 to 40 mmHg of pressure. Knee-high stockings are easier to put on but less effective because blood can still pool in the thighs. The higher the garment reaches, the more blood it keeps in your central circulation. They’re most useful if your symptoms are worst when you’re standing for long periods.
Use Physical Maneuvers When You Feel Dizzy
If you feel lightheaded or sense that you might faint, a few simple muscle-tensing techniques can quickly push blood pressure up and buy you time to sit or lie down safely.
- Leg crossing: Cross one leg over the other and squeeze the muscles in your legs, abdomen, and buttocks. Hold until the dizziness passes.
- Arm tensing: Grip one hand with the other and pull them apart without letting go, creating isometric tension through your arms and chest.
- Hand grip: Squeeze a rubber ball (or just make a tight fist) with your dominant hand for as long as you can or until symptoms fade.
These counterpressure techniques work by forcing blood out of large muscle groups and back into central circulation. They’re not a long-term fix, but they’re effective in the moment and can prevent fainting episodes.
Other Daily Habits That Help
Changing positions slowly is one of the simplest and most effective strategies. When getting out of bed, sit on the edge for 30 seconds before standing. When rising from a chair, pause before walking. This gives your cardiovascular system time to adjust.
Sleeping with the head of your bed slightly elevated (about 10 to 15 degrees) can help your body maintain better blood pressure regulation overnight, making the transition to standing in the morning less dramatic. Avoiding long, hot showers or baths also helps, since heat dilates blood vessels and pulls pressure down further.
When Lifestyle Changes Aren’t Enough
If dietary and behavioral strategies don’t relieve your symptoms, medications are available. The most commonly prescribed options work by either increasing blood volume or tightening blood vessels to raise pressure. One medication acts like a hormone that tells your kidneys to retain more salt and water, expanding blood volume. Another directly constricts blood vessels. Both require a prescription and monitoring, since pushing blood pressure too high in the other direction carries its own risks.
It’s also worth checking whether any medications you already take could be causing the problem. Blood pressure medications, certain antidepressants, and drugs for prostate conditions can all lower blood pressure as a primary or side effect. A dose adjustment may be all that’s needed.