This is an interesting article.
Originally Posted by Myosmith
I quote ...
Moderate alcohol consumption may provide some health benefits. It may:
[reduce the risk of various things]
Even so, the evidence about the possible health benefits of alcohol isn't certain, and alcohol may not benefit everyone who drinks.
Moderate alcohol use may be of most benefit only if you're an older adult or if you have existing risk factors for heart disease, such as high cholesterol. If you're a middle-aged or younger adult, some evidence shows that even moderate alcohol use may cause more harm than good. In fact, if you're a woman and drink alcohol, talk to your doctor about taking supplemental folate to help reduce the risk of breast cancer associated with alcohol use. You can take other steps to benefit your cardiovascular health besides drinking ó eating a healthy diet and exercising, for example.
And there's more. Read the whole article.
The benefits sound "proven" to me.