It is not easy to have low blood pressure and high blood pressure because it cost a lot of money. Low blood pressure can cause light-headedness, dizziness, or even fainting if not enough blood is getting to the brain. Diseases and medications can also cause low blood pressure. On the other hand, having high blood pressure directly increases the risk of coronary heart disease which leads to heart attack and stroke and it can occur in children or adults, but it is more common among people over age 35. Because of these sickness, blood pressure monitor is created to determine person's blood pressure. And from this, they will know how to manage their diet. It is also important that we do a lot of exercise and eat the right kind of food to avoid having these sickness.