Men's bodys have enzymes that convert one chemical to another so your body can process it easier. Beer aids in the conversion of testosterone to estrogen so that we can expell it. Problems arise though if you drink too often. You end up with sustained high estrogen levels which is why many older alcoholics have high pitched voices and larger than normal breasts and hips. Also the one beer a day theory isn't beneficial at all until about age 35 when our body's systems start to function less efficiently and need other chemical processes to suplement them. Even at these ages a doctor won't tell you to drink a beer a day because ibuprofen is safer if your kidneys are functioning normally. Red wine is actually suggested because of the tannins contained within grape skins. This is why French people who as a country have some of the worst dietary habits (i.e. excessive amounts of animal fats, meats, cheese, and other dairy products) have lower rates of congenital heart failure.