Blood pressure is mesure of the force of blood per unit area as it flows through arteries. Mearsures in mm Hg (millimeters of mercury).
It is represented by two measurements, e.g. 120/80 mm Hg:
- Systolic (first number) is the pressure in arteries when heart contracts- bp at highest
- Diastolic (second number) is the pressure in arteries when heart relaxes.
Normal bp is about 120/80 mm Hg, can be affected by age and lifestyle.
Can reduce high bp and maintain normal bp by doing regular aerobic exercise to strengthen heart. Healthy diet can also help by weight steady.
High bp is dangerous because blood vessels can weaken and burst, and if they burst in the brain they may cause brain damage or a stroke; or in kidneys, kidney damge. Low bp means blood doesnt circulate effciently depriving some parts of the body of glucose and oxygen. this can lead to dizziness, fainting, and cold hands and feet. Pressure in kidneys may drop causng kidney failure.
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