High blood pressure symptoms and causes
About blood pressure
Blood carrying oxygen and nutrients is pumped around your body by your heart. Two major factors determine blood pressure: the force and volume of the blood and the size and flexibility of the arteries.
You can get high blood pressure if the walls of your arteries lose their elasticity, become narrowed or contract too much, if your heart is pumping too much blood or if you have too much blood in circulation.
About one in 10 adults in Australia are estimated to have high blood pressure. This may be underestimating its impact on the population as this is based on self-reported data. An earlier study that measured the blood pressure of participants found that almost one in three men and one in four women over the age of 25 had high blood pressure or were on medication for hypertension.