Isn't hurling the same as caber tossing?

I'm trying to fiture out what this statistic has to do with illegal doping.

In 2000, there were approximately 22,000 drugs on Health Canada's list of drugs approved for human use.

CIHI (2002) reports that just over three quarters (78%) of Canadians aged 12 or older said that they had used one or more prescription or over-the-counter medications in the last month of 1998-99 .The most common drugs taken were painkillers. (taken by 65% )