Hello, I can say for your age the blood pressure readings are quiet low but I can also say this is not that low to be bothering your day to day activities. To maintain your blood pressure all you need to do is taking adequate amount of water in regular intervals sum of 2-3.5 liters of water a day and also take lemon juice with pinch of salt and 1 tea spoon of sugar. Mean while you cam also check you blood sugar levels because low bp not alone will cause giddiness. Thank you

Definitely. That BP is not normal for your age.