How Can I Raise My Diastolic Blood Pressure?

Diastolic blood pressure is the lower number in a reading like 118/76. It reflects the pressure in your arteries while your heart rests between beats. If your diastolic number is consistently low and you feel fine, there may be nothing to fix. If it is low and you feel dizzy, weak, or faint, the cause matters more than the number itself.

Raising diastolic pressure is not a goal in the way lowering high blood pressure is. There is no universal target for a “good” diastolic number, and no medication approved specifically to raise it. When treatment is needed, it usually means correcting an underlying cause such as dehydration, blood loss, or a medication effect. Lifestyle steps like drinking more fluids, eating salt, and wearing compression stockings can help in some situations, but they are not right for everyone.

What Counts as Low Diastolic Blood Pressure?

A diastolic reading below 60 mm Hg is generally considered low. That threshold comes from standard clinical reference ranges, not from a rule that applies identically to every person.

For some people, a diastolic in the 50s is normal and has been for years. Young, physically fit adults often run lower blood pressures, and athletes can sit in the 50s without any problem. In those cases the number is a reflection of efficient circulation, not a disorder.

What matters is the pattern and the symptoms. A one-time low reading after a hot day or a stomach bug is different from a diastolic that has dropped steadily over months. Symptoms change the picture too. Lightheadedness when standing, blurry vision, fatigue, trouble concentrating, or fainting suggest the pressure is low enough to affect blood flow to the brain.

There is also an age effect worth knowing. In older adults, a low diastolic can be more concerning than the same number in a younger person. That is because arteries stiffen with age, and a low diastolic in an older adult sometimes signals that the heart is not filling normally between beats. This is a clinical judgment, not something to self-diagnose from a home monitor.

What Causes Diastolic Blood Pressure to Drop?

Most low diastolic readings trace back to one of a handful of causes. Finding the cause is the only reliable way to know whether the number needs to be raised at all.

• Dehydration. Not enough fluid in the bloodstream lowers pressure across the board. Fever, vomiting, diarrhea, heavy sweating, and simply not drinking enough can all do it.
• Medications. Blood pressure drugs, diuretics, some antidepressants, and certain heart medications commonly lower diastolic pressure. This is often the single biggest factor.
• Blood loss. Any significant bleeding, including from the digestive tract, reduces blood volume and pressure.
• Heart problems. Conditions that affect how well the heart fills or pumps, such as aortic valve narrowing or heart failure, can lower diastolic pressure.
• Endocrine and nervous system conditions. Disorders affecting hormones or the nerves that regulate blood pressure can cause chronic low readings.
• Pregnancy. Blood pressure often drops in early and mid-pregnancy because blood vessels widen. This is usually normal, but it should still be monitored by a clinician.
• Standing up. In some people, pressure falls within seconds to minutes of standing. This is called orthostatic hypotension and it is a distinct issue from a low resting diastolic.

Sometimes no cause is found. This is called chronic asymptomatic hypotension, and if there are no symptoms, it generally does not require treatment.

How Can I Raise My Diastolic Blood Pressure Safely?

When a clinician decides low diastolic pressure needs attention, the first step is almost always fixing the underlying cause rather than chasing the number. The steps below are the ones most often discussed. None of them are universal, and several can be harmful if applied to the wrong person.

Fluids and electrolytes

Drinking more water increases blood volume, which can raise pressure. This is most useful when dehydration is the cause. Adding electrolytes may help if you have been sweating heavily or recovering from illness. There is no single recommended amount that fits everyone, and people with heart or kidney conditions may need to limit fluid rather than increase it.

Salt intake

For some people with chronic low blood pressure, clinicians suggest a higher-salt diet. Salt helps the body hold onto fluid, which supports blood volume. This is a genuine clinical approach, but it is not appropriate for everyone. Anyone with high blood pressure, heart failure, kidney disease, or a history of stroke should not increase salt without medical guidance. The evidence for salt as a treatment for low blood pressure is based on clinical experience more than large trials.

Compression stockings

Graduated compression stockings squeeze the legs to help push blood back toward the heart. They are most helpful for people whose pressure drops when standing. They are not a fix for a low resting diastolic caused by dehydration or medication.

Smaller, more frequent meals

Large meals can cause a dip in blood pressure after eating, especially in older adults. Eating smaller meals more often sometimes reduces that drop. This is a practical adjustment rather than a proven treatment.

Slow position changes

Standing up slowly, pumping your ankles before rising, and sitting on the edge of the bed before getting up can reduce dizziness. These steps do not raise resting diastolic pressure, but they reduce the risk of fainting and falls.

Medication adjustments

If a medication is the cause, a clinician may lower the dose, switch drugs, or stop it. Never adjust a prescription on your own. Some blood pressure medications are prescribed for reasons beyond blood pressure, and stopping them abruptly can be dangerous.

For people with serious symptoms that do not respond to these steps, clinicians sometimes prescribe medications that raise blood pressure. These are used in specific situations and are not a general solution. The evidence for them is strongest in particular conditions, not for low diastolic pressure in general.

When Low Diastolic Pressure Is Not a Problem

A low diastolic number without symptoms is usually not something to treat. This is the case for many healthy adults, especially those who are lean, active, or young.

Chasing a higher number in this situation can backfire. Adding salt or fluids unnecessarily, or taking medications meant for other conditions, carries real risks. Blood pressure that reads low on a home monitor but produces no symptoms does not automatically need correction.

There is one important exception. If low diastolic pressure appears alongside a normal or high systolic number, that pattern deserves medical attention. A reading like 150/55 is not simply “low diastolic.” It can reflect stiff arteries and is associated with cardiovascular risk in older adults. This pattern should be evaluated by a clinician, not managed at home.

What Should You Do If You Feel Dizzy or Faint?

Symptoms are the signal that matters. If low diastolic pressure is causing dizziness, weakness, confusion, or fainting, that is a reason to see a clinician rather than experiment with home remedies.

Fainting is the clearest warning sign. It means blood flow to the brain dropped enough to cause a loss of consciousness, even briefly. Falls from fainting can cause serious injury, especially in older adults.

Seek medical care promptly if low pressure comes with chest pain, shortness of breath, a rapid or irregular heartbeat, confusion, or fainting. These can point to a heart problem, significant blood loss, or another condition that needs treatment.

For milder symptoms, it helps to track readings over time. Note the time of day, what you ate or drank, whether you were standing or sitting, and any medications taken. This record gives a clinician far more to work with than a single number.

Does Diet or Exercise Raise Diastolic Blood Pressure?

Regular exercise generally lowers blood pressure over time, not raises it. This surprises people who assume that a low diastolic number means they should exercise less. For most healthy adults, activity supports normal blood pressure regulation rather than pushing diastolic down to a problem level.

Diet can influence blood pressure, but there is no eating plan designed to raise diastolic pressure. Caffeine can cause a short-term rise in blood pressure, but it is not a treatment for chronic low pressure, and relying on it can disturb sleep and heart rhythm.

Alcohol is sometimes mentioned because it can briefly raise pressure. It is not a safe or reliable way to manage low blood pressure, and regular drinking carries its own health risks. No clinician would recommend starting to drink for this purpose.

If you want to support healthy blood pressure, the well-established basics still apply: stay hydrated, eat regular meals, avoid standing for long stretches without moving, and get enough sleep. These steps help your body regulate pressure normally. They are not a cure for a specific underlying cause.