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A blood pressure of 55/40 is considered low blood pressure.
Low blood pressure, also known as hypotension, occurs when the systolic number is less than 90 or the diastolic number is less than 60. Hypotension generally isn't considered a medical issue unless it causes symptoms (such as dizziness, light-headedness, or fainting) or unless it drops suddenly.
Because this blood pressure is considered low, you might experience the following symptoms:
However, many people have what looks like low blood pressure but have no symptoms at all. For example, elite athletes or endurance runners may have extremely low blood pressure due to their intense physical training and overall cardiovascular health. It's also possible to just have low blood pressure naturally.
If you have any of the symptoms above or just have questions about your blood pressure, make an appointment to speak to your doctor.
Because this blood pressure reading indicates low blood pressure, you may want to ask your doctor about lifestyle changes that increase your blood pressure. Here are a few ways you can increase your blood pressure to a more normal range without medication:
If you haven't been successful raising low blood pressure with the lifestyle modifications listed above, you may want to ask your doctor if there are any medications that can help. The following medications are commonly prescribed for low blood pressure:
The information on this page is intended to be an educational reference only and is not to be taken as medical advice. Always consult your doctor before making any changes to your diet or lifestyle.
If you think you're having a medical emergency, call 911 or the emergency telephone number in your home country immediately.