I have recently been told I have high blood pressure by a nurse. I'm not sure what it is exactly, but I saw the number 37, which I suppose is the higher number of the two. As I am only 20 years old, and not overweight, I thought this was odd. I then thought back and it was this also two years ago when I was a couple of stone lighter and a size 6 - 8 (American size 2 - 4). - It was disregarded at the time as I was also ill. Until about a year ago, I would hardly ever eat anything fatty or anything too salty and when I was a size 6, I didn't eat much at all. What I'm wondering if it could it be in my jeans? - My dad was told he couldn't go in the army at 18 years old because of high blood pressure and he was also slim with a 28 inch waist. We both also go dizzy very regularly and have the odd palpitation. Should I just forget about this, or is there something here to worry about?