A recent study conducted by the University of Miami has suggested that diastolic blood pressure, the bottom number in a blood pressure reading, may play a significant role in evaluating the risk of brain scars, known as white matter lesions.
These lesions can be indicative of various health conditions, including dementia, stroke, and an increased risk of falls.
The diastolic blood pressure measures the pressure exerted by blood against artery walls when the heart is resting between beats.
According to guidelines from the American College of Cardiology and the American Heart Association, a diastolic blood pressure reading of 80 or higher is considered high blood pressure.
The study examined the relationship between blood pressure scores and the number and location of white matter lesions in the brain.
Researchers found that individuals with the lowest diastolic blood pressure had fewer white matter lesions on MRI scans compared to those with higher diastolic blood pressure.
Previous studies have linked high systolic blood pressure (the top number in a blood pressure reading) to narrowed arteries, which can lead to white matter lesions.
However, this study found that individuals with diastolic blood pressure below 80 had smaller white matter lesions in three brain regions seen on MRI compared to those with diastolic blood pressure over 90.
White matter is composed of nerve fibers that transmit messages to and from the brain, affecting muscle movement, sensation, and cognitive functions.
Lesions in white matter can block these messages, increasing the risk of falls and potentially leading to strokes and cognitive problems.
The study highlights the importance of monitoring blood pressure and discussing appropriate treatments with healthcare providers, as different regions of the brain may be affected differently by blood pressure levels.
In summary, the study suggests that diastolic blood pressure may be an important factor in assessing the risk of white matter lesions in the brain, which can be indicative of various health conditions.
Monitoring blood pressure and seeking appropriate medical advice is crucial for overall health.
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