Low blood pressure can have numerous causes. Some of these causes are a weak heart, low blood volumen, and lack of energy. 

When dealing with subtle energy problems check for a weak heart chakra, blocked heart meridian, low Chi, and low electron energy. Also, check for low energy production in the heart cells.

High blood pressure, as well, can have numerous causes. Some of the most common are the presence of metal toxins; artery problems, such as plaque in the arteries, hardening of the arteries, and poor vasodilation; sucrose in the blood; stress; defective gene switching; and poor kidney function.