Authoritative organizations may not be your best source of advice. As a health journalist, I rely a great deal on expert opinions and authoritative resources. But I've also learned to get second and third opinions, to do my own research, to follow the money and to consult my own common sense and experience. Basically, I've learned to question authority (which is No. 50 of the 101 Revolutionary Ways to Be Healthy). Because what I've discovered is that experts and authorities of all kinds are often mistaken -- sometimes about important stuff. And in my experience, they are wrong more often than they will admit to being in doubt.