To put this real simple for you, you need to not drink alcohol at all after a bypass surgury simply for the fact that your body needs to heal and cannot do so if it has alcohol in it. You need to feel blessed to be alive and not worry about drinking. As far as alcohol increasing HDL
, I have never heard of that. HDL is your good cholesterol
and you want it to be higher than 45. Smoking
cigs lowers it, as does drinking and having a sedentary lifestyle. Exercise, ( according to your doctors restrictions), eat oatmeal, dont smoke, dont drink, and your HDL will increase.