Researchers used online surveys to track more than a hundred college students for two months. The students recorded happenings like drinking, smoking and hangovers.
They found students who smoked on the same days they drank were more likely to suffer a hangover than those who only drank. While the design of the study didn't allow the team to pinpoint exactly how much worse the hangovers were or if smoking caused worse hangovers.
Study authors believe it may have something to do with the parts of the brain that process both tobacco and alcohol. Findings appear in the "journal of studies on alcohol and drugs."