I have been thinking alot about Seth Godin new book All Marketers are Liars. He has a blog devoted to the book and the lies we tell and are told.
Another anecdote from the visit to the dietician is about milk. Most people think they are doing very well for themselves when they switch from whole milk to 2% milk.
Whole milk is 4% milk.
Did you know that? I had no idea.
And more so, I have no idea why I never questioned it.
I recall that decaf coffee is a similar deal: 3% caffeine vs. 6% for full strength.