Home Science Biology What causes a hangover? ScienceBiology What causes a hangover? We've all been there before - a seemingly innocent night with some friends, ending in a morning from Hell. Why must it be like this? Find out what causes the notorious hangover, and share the truth with the world! By Watch and Study - Apr 25, 2016 298 RELATED ARTICLESMORE FROM AUTHOR Biology The scientific hangover cure Biology Why do coffee and alcohol make you pee more? Biology How sugar affects the brain Chemistry Weird Pregnancy Tests Chemistry The Science of Hangovers Tell us what you think!