The following is an excerpt from Born with a Junk Food Deficiency: How Flaks, Quacks, and Hacks Pimp the Public Health (Prometheus Books, 2012). Click here to order a copy of the book.

In his book Psychiatryland, psychiatrist Phillip Sinaikin recounts reading a scientific article in which it was debated whether a three-year-old girl who ran out into traffic had oppositional-defiant disorder or bipolar disorder, the latter marked by ‘grandiose delusions