Blood pressure is the pressure that is exerted on the blood vessels when they are pumped out of the heart and towards the various organs of the body. Blood pressure is usually two types – systolic and diastolic. Diastolic blood pressure is the pressure that is exerted on the blood vessels when the heart is between two beats or at rest. Usually diastolic blood is lower than the systolic because of obvious reasons.
Diastolic blood pressure within 60 is normal. Anything above 60 is moderate high diastolic blood pressure and if you are having more than 90 as a reading then you have what is known as a high diastolic blood pressure. Reading the blood pressure readings is easy. They are always mentioned as a set of two numbers separated by a slash. It almost reads as a fraction. The first number on the left is the reading for the systolic pressure, the number on the right is the diastolic. Usually if you have ever measured your blood pressure you would have noticed that your doctor writes a set numbers such as 120/80. This is considered normal.
Your blood pressure can vary depending on a wide variety of factors. If you are walking briskly or jogging, your heart pumps in more blood and at a higher frequency to allow for the increased amount of activity. This is not considered to be a problem. When your blood vessels are clogged due to cholesterol consumed through unbalanced diet, the blood vessels get reduced and the blood flow causes extra pressure on the vessels.
Lower pressure is also not good for your health. It simply means that the blood is unable to reach all the parts of your body and that makes it difficult for your heart to transport the necessary oxygen to all parts of the body and also clear out all the waste products out of them.