Actually, we all have a rough idea of how this is related to alcohol and hangovers, right? Dehydration, which causes the brain to slam once morest the outer surface of the skull until bruised. Or so. The whole process is explained in a little more detail (and correctness) in this video by TED-Ed explained, a lesson by Judy Grisel animated by Anton Bogaty.
„The molecule responsible for hangovers is ethanol, which we colloquially refer to as alcohol. Ethanol is present in all alcoholic beverages, and generally speaking, the more ethanol, the greater the potential for a hangover. So, how exactly does alcohol cause a hangover— and is there any way to prevent one? Judy Grisel explores the surprising ways that alcohol affects the body.“
