After a night of heavy drinking, you can usually expect a head-pounding hangover and frequent trips to the bathroom. "Alcohol can increase gut motility and it doesn't get broken down before it reaches the colon, where bacteria feast on these, resulting in bloating and diarrhea," Dr. Caguiat says. For the laymen, increasing gut motility means that everything moves more, and faster, down the pipes than you're used to. Which you know, since you've likely experienced the effects firsthand.
Fruit is like nature's candy, and just like unnatural candy, too much of it may lead to bathroom problems. "Fruits contain certain sugars that we don't digest, and therefore end up being digested by gut bacteria," she explains. "Again, with fermentation, gas is the byproduct, which can lead to bloating and diarrhea." Apple-and-banana farts are no good, so consume in moderation.