When the pressure in the arteries increase, a man is supposed to suffer from high blood pressure. However, when the pressure falls a man suffers from low blood pressure and this is known as low diastolic pressure. Blood pressure is the pressure of blood within the arteries of the body. Blood pressure is the driving force that causes blood to flow through the body from the arteries (where the pressure is high), through organs, and into the veins (where the pressure is low). Blood pressure is generated by the pumping of blood by the heart into the arteries as well as by the resistance to the flow of blood by the arteries. The systolic blood pressure (the top number) represents the pressure in the arteries as the muscle of the heart contracts and pumps blood into the arteries. The diastolic blood pressure (the bottom number) represents the pressure in the arteries as the muscle of the heart relaxes after it contracts.
Now, normal blood pressure is usually said to be 120/80 (systolic/diastolic) or less, measured in millimeters of mercury. The higher (systolic) number represents the pressure while the heart is beating. The low diastolic pressure number represents the pressure when the heart is resting between beats. The systolic pressure is always stated first and the diastolic pressure second. Systolic blood pressure for most healthy adults fall between 90 and 120 millimeters of mercury (mm Hg). Normal diastolic blood pressure falls between 60 and 80 mm Hg. Current guidelines define normal blood pressure as lower than 120/80.
Low blood pressure is blood pressure that is so low that it is causing symptoms or signs due to the low flow of blood through the arteries and veins. Blood pressure information is necessary to provide the best blood pressure medication. Blood pressure readings can be recorded by the blood pressure monitor or digital blood pressure cuffs. Blood pressure levels whether low or high have to be kept in or around normal blood pressure levels.