Foods won't help your blood pressure but if you are anaemic then you need iron supplements
Foods which contain iron are:-
Red meat, green leaf vegetables, fortified breakfast cereal, bran, soybean, spinach, red kidney
beans, rice, raisins, and prunes.
Low BP is only ever a problem if you are symptomatic with dizziness
etc. If not then low blood pressure is never a problem, it's a normal healthy variant and you are at a significantly lower stroke