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When blood pressure falls many physiological cascades commence in order to return the blood pressure to a more appropriate level. The blood pressure fall is detected by a decrease in blood flow and thus a decrease in glomerular filtration rate (GFR). Decrease in GFR is sensed as a decrease in Na + levels by the macula densa.
For example, a blood pressure above 120/80 is too high, and every point higher takes a toll on the body because the pressure pounds through the arteries 24/7, never resting and the negative ...
New research suggests even just a bump of 10 mmHg over normal levels of systolic blood pressure can increase risk of stroke by 20%.
High blood pressure accounts for 35–50% of stroke risk. [110] Blood pressure reduction of 10 mmHg systolic or 5 mmHg diastolic reduces the risk of stroke by ~40%. [111] Lowering blood pressure has been conclusively shown to prevent both ischemic and hemorrhagic stroke. [112] [113] It is equally important in secondary prevention. [114]
Brain ischemia has been linked to a variety of diseases or abnormalities. Individuals with sickle cell anemia, compressed blood vessels, ventricular tachycardia, plaque buildup in the arteries, blood clots, extremely low blood pressure as a result of heart attack, and congenital heart defects have a higher predisposition to brain ischemia in comparison to the average population.
Other stroke risk factors include: High blood pressure (Learn more about How to Lower Blood Pressure.) High cholesterol. Heart disease. Diabetes. Obesity. Sickle cell disease. Not exercising regularly
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