Here’s some good news for anyone who’s ever woken up fuzzy-headed and bleary-eyed after a night of heavy boozing: 
New research suggests that hangovers fade with age, reports WebMD:
“A large study of Danish people finds that hangover symptoms are much less likely to strike people aged 60 and older compared to their younger counterparts.
“But don’t start dreaming of post-retirement pub-crawling without pesky consequences the day after. It’s unclear why older people might suffer from fewer hangovers. They might be savvier about how to avoid them, or they might simply be more tolerant of alcohol consumption. A combination of factors could also be at play.
“Whatever the case, the research is important for more than what it says about the effects of drinking over a lifetime, said study co-author Richard Stephens, a senior lecturer in psychology at Keele University, in England. Scientists know that people who get the worst hangovers are more likely to become alcoholics, he said, possibly because drinkers who get them try the “hair-of-the-dog” approach and drink more the day after.
“Hangover symptoms after heavy drinking were much more common in the younger people. Sixty-two percent of men aged 18 to 29 reported exhaustion after drinking, for example, compared with just 14 percent among those aged 60 and older.Nausea was much less common (1.5 percent vs. 10 percent) among older men, as was dizziness (1.5 percent vs. 8 percent) and stomachache (1.4 percent vs. 6.2 percent).”
More at: http://www.webmd.com/healthy-aging/news/20130913/older-age-may-mean-fewer-hangovers?src=RSS_PUBLIC