For about the last 6 mo. I will get a bad hangover after 1 or 2 drinks. It doesn't matter if its beer or wine, although it does happen more with wine. Sometimes it even happens if I had a drink or two in the afternoon and then nothing for 6 or 7 hours and 8 hours of sleep. I also drink lots of water in between drinks and will eat something before going to sleep. Any ideas as to why?