The morning-after-effects of over indulging in alcohol vary from person to person but there are some “old home cures” or home remedies for hangovers you may want to try. According to a 1992 Danish study over 75% of adults will experience a hangover at some point. The most common complaint related to hangovers is headaches. The Mechanics & Prevention of Hangovers The ethanol in alcohol causes dehydration, which can cause headaches, dry mouth and tiredness.