If your blood pressure regularly reads below 90/60 mmHg and you feel dizzy, lightheaded, or fatigued, certain foods and eating habits can help bring it up. The most effective dietary strategy is increasing your salt and fluid intake, but other nutrients and meal patterns play a role too. A drop of just 20 mmHg in systolic pressure (the top number) can be enough to cause dizziness or fainting, so even small dietary changes can make a noticeable difference.
Salt Is the Most Direct Fix
Sodium helps your body hold onto water, which increases blood volume and pushes pressure higher. For people with chronically low blood pressure, doctors often recommend a high-salt diet of 8 to 10 grams of sodium chloride per day, far above what’s typically advised for the general population. That’s roughly 1.5 to 2 teaspoons of table salt. Some people can’t hit that target through food alone and use supplemental salt tablets.
You don’t need to rely on junk food to get there. Practical high-sodium options include:
- Snacks: salted nuts, pretzels, olives, pickles, salted popcorn, cheese portions
- Meal additions: soy sauce, miso, gravy, cheese sauce, stock cubes, garlic salt
- Protein sources: smoked fish or meat, bacon, anchovies, fish canned in brine, salami
Simply sprinkling salt onto meals or using it more liberally in cooking is the easiest starting point. About 6 grams of added salt per day (roughly one level teaspoon) is a common baseline recommendation for people managing conditions like postural tachycardia syndrome, with some individuals needing up to 10 grams extra.
Water and Electrolyte Drinks
Salt works best when paired with enough fluid. More sodium without adequate water won’t expand your blood volume effectively. A general guideline is 25 to 30 milliliters of water per kilogram of body weight per day. For a 70 kg (154 lb) person, that comes out to roughly 1.75 to 2.1 liters daily, though people with low blood pressure often benefit from aiming higher.
Electrolyte drinks or dissolvable tablets (typically containing 0.3 to 0.8 grams of salt per serving) can help if you struggle to eat enough salt or if plain water doesn’t seem to help. These are widely available in pharmacies and grocery stores. Drinking a glass of water before standing up or before meals can also blunt sudden pressure drops.
Caffeine for a Short-Term Boost
Coffee and tea can raise blood pressure by about 5 to 10 points in people who don’t drink them regularly. The effect kicks in within 30 minutes and can last up to two hours. If you already drink caffeine daily, you’ve likely built tolerance and won’t see much of a bump. But for occasional use, a cup of coffee before a time when you tend to feel lightheaded (like before a morning shower or a long walk) can be a useful tool.
How Meal Size Affects Blood Pressure
After eating, your body diverts blood to the digestive system. Normally, your heart rate increases and blood vessels elsewhere tighten to compensate. But in some people, this response falls short, and blood pressure drops noticeably after meals. This is called postprandial hypotension, and large meals are one of its main triggers.
Switching from three large meals to six smaller ones throughout the day keeps your digestive system from demanding too much blood at once. High-carbohydrate meals tend to cause the biggest post-meal dips, so balancing each small meal with protein and fat can help stabilize things further.
B12 and Folate Deficiencies
When your body doesn’t get enough vitamin B12 or folate, it can’t produce red blood cells properly. The resulting anemia reduces the blood’s ability to carry oxygen, which can lower blood pressure and leave you feeling weak, tired, and dizzy. If low blood pressure is accompanied by persistent fatigue or pale skin, a nutritional deficiency may be part of the picture.
Foods rich in B12 include beef, liver, chicken, fish, eggs, and dairy products like milk, cheese, and yogurt. Many breakfast cereals are also fortified with B12. For folate, turn to broccoli, spinach, asparagus, lima beans, oranges, strawberries, bananas, and enriched grain products like bread and pasta. Addressing a deficiency won’t raise your blood pressure overnight, but correcting it over weeks can resolve one underlying cause.
Licorice: Effective but Use With Caution
Real licorice (not the artificially flavored candy) contains a compound called glycyrrhizin that alters your body’s balance of sodium and potassium, causing you to retain fluid and raising blood pressure. Some people with low blood pressure drink licorice root tea or eat traditional licorice for this reason.
It works, but it’s not something to use freely. Too much glycyrrhizin can cause muscle weakness, fluid retention, and abnormal heart rhythms. European and World Health Organization guidelines put the safe upper limit at 100 mg of glycyrrhizin per day for most adults, though some individuals react to lower amounts. If you try licorice tea or supplements, start small and pay attention to how you feel. People with any history of heart problems should avoid it entirely.
A Sample Day for Raising Blood Pressure
Putting this together in practice might look like: a smaller breakfast with eggs, a slice of cheese, and salted toast with a cup of coffee. A mid-morning snack of salted nuts or crackers with a glass of water or an electrolyte drink. A moderate lunch with smoked salmon or deli meat, some pickles on the side, and soy sauce if you’re having rice or noodles. An afternoon snack of olives or salted popcorn. A smaller dinner with plenty of seasoning and a side of broccoli or spinach for folate. Another small snack before bed if needed.
The pattern matters as much as the individual foods. Spreading your intake across six smaller meals, keeping fluids up throughout the day, and salting your food liberally gives your body the raw materials it needs to maintain adequate blood volume and keep pressure from dipping too low.