Does drinking a bottle of beer daily have any adverse effect on the body system?

Probably not: If you aren't drinking more than a bottle a day and aren't taking any medicines that would be affected by the beer drinking and don't have a health condition that would make you need to avoid alcohol, then it is probably not a worry to drink a beer a day. In that case, the biggest potential risk to you might be some weight gain. A beer a day could give you some unnecessary calories.