http://news.yahoo.com/blogs/sideshow/seeking-a-cure-for-the-hangover--scienists-say---sprite--181644088.html

"The group of researchers from Sun Yat-Sen University in Guangzhou conducted a series of experiments and found that hangovers are caused "not by the ethanol itself, but by ethanol’s first metabolite, acetaldehyde," Chemistry World explained."

I'm pretty sure that is a made up University by Pepsi Co.