The Biggest Junk Science of 2013

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#10. Vaccines Make You Gay

In March of this year, Gian Paolo Vanoli, a 70-year-old Italian scientist, ludicrously claimed that vaccines are causing homosexuality. Here's his "impeccable" reasoning, as told to Vice and translated by the Huffington Post:

The vaccine is introduced into the child, the child then grows and tries to find its own personality, and if this is inhibited by mercury or other substances present in the vaccine which enter the brain, the child becomes gay.

Vanoli's logic lies in stark opposition to the facts. Vaccines have no bearing on sexual orientation, whatsoever. According to the American Psychological Association, there is no concrete consensus about what determines someone's orientation. "Many think that nature and nurture both play complex roles; most people experience little or no sense of choice about their sexual orientation.

While vaccines have never made anybody gay, they have, however, prevented 100 million cases of contagious disease in American children since 1924.

(Image: Tim Evanson via Wikimedia Commons)

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