High blood pressure and decreased blood flow in the brain may cause the build-up of dangerous amyloid plaque in the brain. Having problems with the blood vessels in the brain may affect thinking, cognition and memory.
Brain's blood vessels work like a plumbing system that distributes oxygen to every parts of brain cells and remove waste materials from the cells.
The brain relaxes its vessels to maintain constant blood flow as it adjusts for changes in blood pressure, but the brain vessels in Alzheimer's patients prevent blood flow and allow amyloid to get to the brain cells.
Alzheimer's patients have lower blood flow in their brains than the people without the disease. They experience cognitive decline and memory loss that leads to dementia.
Taking blood pressure lowering drugs can reduce the effects on memories of affected people because the drugs can cross the blood-brain barrier and prevents the toxins from getting to the brain.
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