Is a Diastolic of 50 Too Low?

Reviewed on 6/2/2021

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A diastolic blood pressure reading of 50 mm Hg is too low. Once your diastolic number goes below 60 mm Hg, it can make you dizzy or lightheaded and consistently low diastolic blood pressure can lead to heart disease.

Yes, a diastolic blood pressure reading of 50 mm Hg is too low. Normal blood pressure is 120/80 mm Hg, and once your diastolic number goes below 60 mm Hg, it can make you dizzy or lightheaded. This is especially problematic in older people if their bones are brittle, as a fall could result in fractures.

During the diastole phase when your heart relaxes after a contraction, your heart fills with blood via your coronary arteries. Low diastolic pressure means your heart is lacking adequate blood supply and oxygen, a condition called ischemia. If you consistently have low diastolic pressure, you may develop chronic ischemia, which can weaken your heart over time and lead to heart attack, heart failure, or other heart conditions.

What causes low blood pressure?

If you have low blood pressure, that means either your systolic pressure is below 90 mmHg or your diastolic pressure is below 60 mmHg. Conditions that can cause low blood pressure include:

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References
Mayo Clinic. Low Blood Pressure (Hypotension). https://www.mayoclinic.org/diseases-conditions/low-blood-pressure/symptoms-causes/syc-20355465#:

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