“The majority of men who come in seeking penile enlargement are average,” says Lipshultz. “I just don’t think men have a realistic idea of what normal is. Hence they think that they are below normal when actually they’re average.” (For the record, the average erect penis measures 5.6 inches, according to research published in the Journal of Sexual Medicine.)
That’s usually because they’re not getting enough blood flow to the penis, which could be the result of being overweight, smoking, increased cholesterol, high blood pressure, diabetes, or cardiovascular disease. So the first step in your penis-growing experiment should be to get the rest of your body healthy — especially your cardiovascular system. “What’s good for the heart is good for the penis,” says Fisch.
However, after more than a century of generally dubious and sometimes lunatic penis enlargement attempts, there's still not much you can do. Sure, there are lots and lots of supposed options out there -- penis pills, creams, brutal stretching exercises, horrific-looking devices, and penis surgery. Almost none of it works. The few approaches that can work often have modest benefits and serious side effects. How serious? In some cases, erectile dysfunction-serious.