A shockingly high percentage of undergraduates illegally use ADHD drugs. A group of researchers questioned 1,811 undergraduates at a large public U.S. college and found that 34% admitted illegally using ADHA stimulants.

The researchers conducted detailed interviews with 175 of the users. None of these users "sought out information from health professionals, medical or pharmaceutical reference guides, or even Internet sites before taking their first dose."

From the paper "Illicit use of prescription ADHD medications on a college campus: a multimethodological approach" by DeSantis AD, Webb EM, Noar SM, published in the Journal of American College Health. Not available online.