The Science of Hangovers
"There is mixed evidence for a variety of factors that determine how we may react differently to alcohol and hangover."
"Congeners are toxic chemicals that are formed during fermentation, some liquors have more of them than others."
Dark Liquor Makes For Worse Hangovers
"In a head-to-head comparison, bourbon gave drinkers a more severe hangover than vodka."
Why Cheap Booze Makes Your Hangover So Horrible
"It is widely believed that because cheaper alcoholic beverages begin with lower-quality ingredients, more congeners are likely to be produced at the fermentation stage."
Alcohol use and safe drinking
"Certain types of alcoholic drinks get into your bloodstream faster. A carbonated (fizzy) alcoholic drink, such as champagne, will be absorbed faster than a non-carbonated drink."