Bottom line....drink wine....don't be a Rat!
Somebody's really pushing the wine drinking stuff lately! Could it be the wine industry?
But - for those that cannot drink alcohol for one reason or another - you still get resveratrol in Bilberry supplements - which has been used in the same problems of diabetes, eye ailments, cataracts, diabetic retinopathy, high blood pressure, macular degeneration, and sickle cell anemia - just to mention a few things.
Do a Google search on resveratrol and you will find it says: Resveratrol was found in varying amounts in bilberry.
You can also get bilberry from grape skins - which is also in supplements - a safer source for some people.