Wht does wine do to our bodies?

Food used to be my evil, and now that I'm at goal and do not eat any more, I have found that I need another obbessision. I'm addicted to Vicoden (weaning down to 2 a day with the help of my doctor) but find my self needing to replace the buzz with something else. I'm now drinking a 6 oz. glass of white wine a day. Is that really bad???? Most normal people drink more thatn that a day and it's OK. What is the wine doing to us that it doesn't do to normal people? He also put me on Adavan to help with the stress of not having my Vicodin. Any help will be appeciated. Thank you!!!!!