Yes, it’s from Cracked, but it’s interesting:
#5.You’re Probably a Night Owl — And That’s a Bad Thing
#4.You’re Less Likely to Pass On Your Genes
#3. You’re More Likely to Lie
#2. You’re More Likely to Believe Bullshit
#1. You’re More Likely to Be Self-Destructive
Cracked: 5 Unexpected Downsides of High Intelligence
See also:
Why Smart People Do More Drugs
Smart kids more likely to be heavy drinkers
(via Dr. Benway)
From http://technoccult.net/archives/2011/06/10/5-reasons-having-a-high-iq-aint-all-its-cracked-up-to-be/