What can cause hypotension in a 20 year old?

I gave blood yesterday and the nurse said I was very borderline on my blood pressure; the second time she measured it it was 100/56. Any ideas as for causes? There's no history of this in my family. Thanks.

I'm asking about HYPOtension, which is low blood pressure, not HYPERtension, which is high blood pressure.

This measurement was taken BEFORE giving blood, so it's not an after effect.

I'm not on any kind of birth control.

Are you taking any other types of medications? Other causes of low blood pressure include dehydration, heart failure, heart attack, changes in heart rhythm (arrhythmias), fainting, anaphylaxis (a life-threatening allergic response), shock (from severe infection, stroke, anaphylaxis, major trauma, or heart attack), and advanced diabetes. It would be best to see your doctor to see what the actual cause may be.

High amounts of stress can cause Hypertension, as well as an unhealthy body weight, and an unbalanced diet. Also, if you take any medications, you might want to make sure that high blood pressure is not among the side effects.

A person can have low blood pressure after giving blood, low blood or fluid volume or dehydration. Drink lots of fluids and make careful slow movement and position changes so that you do not become light headed.

Since you were about to give blood chances are it was just from stress levels have it checked at regular intervals for a while to make sure though. I'm also 20 and have at different times been told the same thing but when my family doctor take my B.P. he always says it's lower than average. Also if you're on birth control it can really elevate your blood pressure - if you are ask your doctor about switching to a safer pill.

Since you are asking about borderline low blood pressure, and the repeat blood pressure was 100/56, which is within normal limits, I really wouldn't worry about it.

I would suggest that you make sure you drink plenty of fluids, since low volume could cause your blood pressure to drop.

Also, if you are slender, it's possible that the cuff was too large, giving you an artificially low reading.

How did you feel after giving blood? My concern would be that you felt lightheaded or dizzy.

All in all, you sound healthy. Drink plenty of fluids, especially before and after donating blood.

stress,over- thinking ,depression,anxiety.
lack of balance diet.lack of adequet sleep all can contribute 2 hypotension.

that blood pressure is often normal for a healthy 20 year old ask ur doctor 2 b sure