DEAR DOCTOR K: Is acupuncture an effective treatment for erectile dysfunction?
DEAR READER: During an erection, arteries supplying blood widen, and veins leading blood away from the penis clamp down. As a result, more blood is inside the penis, causing it to swell and become firm. It sounds simple, but getting to an erection requires extraordinary orchestration of blood vessels, nerves, hormones and, of course, the psyche. Here is an illustration of this process: