It might be that more educated (wealthy) people self-select into red wine consumption because (1) wealthier people are more likely to have read somewhere that i

It might be that more educated (wealthy) people self-select into red wine consumption because (1) wealthier people are more likely to have read somewhere that it's healthier (even if it's untrue) and (2) it's more culturally sophisticated, more likely to be drunk over a fancy expensive dinner for example