The two glasses per day dictum was a compromise arrived at between the competing interests of discouraging alcoholism while not ignoring the health benefits attributed to the consumption of alcohol. The consensus from peer-reviewed studies is that people who consume moderate amounts of alcohol live longer than either teetotalers or those who consume large amounts of alcohol. The initial criticism that the teetotalers category included former alcoholics who had given up alcohol, but that has recently been put to rest with new studies that factor out that contingent.
So, what is "optimal"? Increasing consumption of wine, especially red wine, is associate with decreased incidence of heart disease, hypertension and neurological problems (Alzheimer's and Parkinsonism). At the same time, increased alcohol consumption is associated with a higher incidence of certain cancers. So, choose your disease. Variation between individuals also complicates the question. Is there any incidence of alcoholism in your family? Do you get hangovers easily?
Consumption of water helps; so does consuming wine with food (digestion of food slows the absorption of alcohol through the stomach lining). My own personal guideline is to avoid consuming more wine than feels healthy to me. How much that is will vary by circumstance. Over the course of a 4 hour dinner I am capable of consuming most of a 750 ml bottle and still feel good at the end. I wouldn't do that on a daily basis, though, so most nights I will have less than 375 ml with dinner. YMMV, as it no doubt will.
Mark Lipton
So, what is "optimal"? Increasing consumption of wine, especially red wine, is associate with decreased incidence of heart disease, hypertension and neurological problems (Alzheimer's and Parkinsonism). At the same time, increased alcohol consumption is associated with a higher incidence of certain cancers. So, choose your disease. Variation between individuals also complicates the question. Is there any incidence of alcoholism in your family? Do you get hangovers easily?
Consumption of water helps; so does consuming wine with food (digestion of food slows the absorption of alcohol through the stomach lining). My own personal guideline is to avoid consuming more wine than feels healthy to me. How much that is will vary by circumstance. Over the course of a 4 hour dinner I am capable of consuming most of a 750 ml bottle and still feel good at the end. I wouldn't do that on a daily basis, though, so most nights I will have less than 375 ml with dinner. YMMV, as it no doubt will.
Mark Lipton