Does drinking red wine increase penis size?
Red wine does not increase penis size. It increases levels of nitrous oxide, which is the most important chemical messenger in the erection process. Nitrous oxide results in dilation of the arteries, which improves blood flow to the penis and to the rest of the body.
According to a study printed in the Nutrition Journal, a little red wine could elevate your testosterone levels. In lab tests, researchers found that a compound in wine blocks an enzyme that causes the body to excrete testosterone, thereby increasing the amount of testosterone circulating in the blood. Wine’s rich antioxidant profile also triggers nitric oxide production, which relaxes artery walls. This increases blood flow.
By now, it's no secret that enjoying a glass of red wine—in moderation, of course—is linked to several health benefits.
In fact, the Mayo Clinic reports that "the alcohol and certain substances in red wine called antioxidants may help prevent coronary artery disease, the condition that leads to heart attacks."
As it turns out, one 2016 study from Harvard seems to think red wine can actually help treat erectile dysfunction.
Although red wine and flavonoid-rich foods like berries and citrus fruits can help prevent the onset of ED, there are plenty of other alcoholic beverages that won't help you get or keep your erections at all.
In fact, researchers have found that too much alcohol affects both your brain and your penis; sober men were able to achieve an erection more quickly than intoxicated men, and some men are unable to have an erection at all after drinking.