The tiny arteries of the brain are sensitive to high blood pressure, and long-term hypertension can cause damage to these vessels, preventing proper blood flow and leading to damage or atrophy of brain tissue. Therefore, hypertension is highly dangerous for the brain, leading to the development of vascular dementia, cognitive impairment, and Alzheimer`s disease.
A high diastolic pressure in individuals over the age of 50 carries a risk of poorer cognitive performance at the age of 70. Even in subjects of 40 and under, hypertension predicts poorer cognitive function later.
According to a MRI study, higher systolic blood pressure is linked to white matter lesions, a type of damage to brain tissue which is caused by poor circulation and may lead to dementia. In addition to this, various long-term studies have shown that systolic pressure which is in or above the range of 140-160 mmHg doubles the risk of Alzheimer`s and other forms of dementia.
Over many years, the Western diet combined with hypertension causes damage on the brain`s delicate small vessels. Therefore, keeping your blood pressure in check is one of the best preventive measures against poor brain function as you age.
Strategies for Healthy Blood Pressure Levels
- Avoid caffeine, alcohol, and salt
- Consume a diet based on whole plant foods
- Exercise regularly
- Maintain a healthy weight
Source: http://justnaturallyhealthy.com/2016/04/26/high-blood-pressure-increases-dementia-risk/