Just as high blood pressure can be fatal for health, in the same way low blood pressure can also prove to be fatal. Low blood pressure is also called hypotension. Low blood pressure is a medical condition in which a person’s blood pressure becomes so low that he can become dizzy and faint. There may also be problems like nausea, lethargy and blurred vision. Normally a normal blood pressure should be 120/80 mmHg (mmHg), but when the blood pressure falls below this, i.e. below 90/60 mmHg, it is called low blood pressure. It can also be serious for health. You must include some foods in your diet to keep blood pressure normal.