i believe that it would help, the reason being that in a fasting state the body scourges on dead and diseased tissue.....the lack of blood flow to the penis is usually caused (i think) by semi-blocked arteries. while fasting this plaque that coats the artery walls will be eaten up and the blood should flow easier. i think you'll probably have to do a fairly extended fast or a period of shorter fasts to enable the body to do it's clean-up. i hope somer answers your question as she's the expert around here and i'm sure that she could add lots more to what i've just given you :)