Food slows down the absorption of alchohol?? 1. The presence of food in the stomach, particularly fats, greatly slows down the absorption of alchohol and drugs into the body. This what I've read in a report on the internet, but I don't know the reason why the rate of absorption slows down. Can anyone tell me the reason??? 2. 3. Thanks in advance. This is only a question which I want to figure out the reason.