I was cleaning out some of my 5:2/IF related links and uncovered this link...Not quite the article that @MaryAnn was looking for but if a terse and snappy retort doesn't get 'em, try referencing some study-backed science:
http://authoritynutrition.com/how-to-wi ... ritionist/
Easy to read summarizing article with links in each section for those who desire further details.
http://authoritynutrition.com/how-to-wi ... ritionist/
Easy to read summarizing article with links in each section for those who desire further details.