"The prestigious science journal Nature surveyed its readers to find out how many were using cognitive-enhancing drugs, and found one in five have boosted their brain power with compounds such as Ritalin.
The informal Internet survey involved 1,400 people from 60 countries. Most were from the United States, but 78, or 5.5 per cent, were from Canada.
About 20 per cent of respondents said they had tried to improve their memory, concentration and focus by taking drugs for non-medical reasons.
The readers of the journal are mainly academics and scientists, but include people in other professions as well."
From The Globe and Mail: Science journal finds 20% of its readers are 'doping'.
Read the Nature piece here: Poll results: look who's doping
PS: Sorry for the quick-blogging, gotta catch that seminar.