1 doctor weighed in:

Can fasting cure erectile dysfunction by increasing blood flow to the penis?

1 doctor weighed in
Dr. Robert Killian
General Practice

In brief: Fasting and Erection

Nope. There is nothing in the scenario that you describe where fasting would improve the blood flow to the flaccid penis or even an erect penis.

In brief: Fasting and Erection

Nope. There is nothing in the scenario that you describe where fasting would improve the blood flow to the flaccid penis or even an erect penis.
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