He knows, because he once saw a guy stick his tongue to a railroad track on a bet, and the fire department had to come get the guy’s tongue off the track, because he couldn’t get it off.  — A Christmas Story

When someone says that you should do such and so, or that something or other is bad for you, you really need to demand they cite the original research.  Right now, children in the United States are catching measles, pertussis, and other childhood diseases in numbers that haven’t been seen in decades.  This has been attributed to the publicity that a Playboy model and actress gave to a now discredited study linking vaccinations to autism.  I still hear people at Boo’s school, many of whom have kids with autism-spectrum disorders, arguing about whether or not to get vaccinations.

A little knowledge can indeed be dangerous, but outright stupidity is homicidal.  Before reacting to the ‘scientific’ advice of someone whom you’ve never met and has no bona fides to back up that advice, seek out the actual data and make your own decision.