Featured category: Health & medicine

Smallpox cultists, the half a billion neurons in your guts, androgen immunity, and the citric acid panic of 1976.

In 1897 a doctor from Sierra Leone infiltrated a Nigerian smallpox cult in order to expose their horrible secret.


Brain
Fr. Leuret et P. Gratiolet [CC BY 4.0 (https://creativecommons.org/licenses/by/4.0)]

Humans have more than half a billion neurons lining their gastrointestinal tract, nearly the same number as in a dog’s brain.


Some people are genetically immune to androgen.


A pseudoscientific pamphlet spread throughout Europe in the late 1970s and early 1980s; it claimed that citric acid and cellulose were “toxic.”

For more about the quirks, mysteries, and surprises of the human body, begin here:

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