The brain is dependent
on blood flow for everything from oxygen and glucose to micronutrients and the
removal of waste products. It has
been believed for some time that elevated blood pressure is a major risk
factor for vascular cognitive impairment, defined as a range of changes in
brain function, from mild to severe, caused by the impaired flow of blood to
the brain. After a review of multiple studies, it appears that high blood
pressure is a major risk factor for vascular cognitive impairment and is
emerging as a potential risk factor for Alzheimer's disease. This is likely to
provide impetus for more specific studies in this area. It also may be a
wake-up call for those with high blood pressure to work with their healthcare
providers to do everything possible to keep their blood pressure within
desirable limits for their age. Prevention runs circles around treatment.
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