Definition A popular term for the unpleasantries affecting 75% of those who drink alcohol to the point of dancing on the table with a lampshade on their heads. After sleeping off the stupor, Hangover Harries and Harriets complain of headaches, nausea, vomiting, thirst, dry mouth, tremors, dizziness, fatigue and muscle cramps, fuzzy cognition, poor visual-spatial coordination and pain with loud noises; in the extreme case, hallucinations, shaking and sweating, these last having features of alcohol withdrawal

Prevention Drink slowly, eat (especially sugars), and drink lots of non-alcoholic fluids

Mechanism Accumulation of acetaldehyde; presence of congeners during alcohol processing and maturation–the darker the liquor, the higher the congeners, the worse the morning-after woozies; alcohol inhibits antidiuretic hormone; the renin-aldosterone system is in overdrive with the liquid form of debauchery. Renin’s exact role in post-rum rise-&-shine roller coaster is unclear  

Reference Sci American June 2003, p91   

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