To be fair, the Tooth Fairies only provided the quote about how much people sit around. The actual data seems to be from a study by "Dr Waseem Bashir of the Department of Radiology and Diagnostic Imaging at the University of Alberta Hospital", so presumably can be trusted.

This the same BCA who sued a science journalist for pointing out that their claims didn't seem to have scientific proof. More at the excellent badscience blog:

http://www.badscience.net/2010/04/british-chiropractic-assoc...