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Fact check
Did magic mushrooms make us human? What the evidence says about Terence McKenna’s idea.
1992
In his 1992 book Food of the Gods, McKenna proposed that psilocybin mushrooms in the diet of early humans helped drive the growth of the human mind.
A 2026 study puts the last common ancestor of P. cubensis and its closest wild relative, from sub-Saharan Africa, at about 1.5 million years ago.
Ancient dental plaque could test the idea in principle. We found no study reporting psilocybin mushrooms in ancient remains.
Lab studies we read describe psilocybin changing perception, not sharpening it. We found no study showing better visual acuity.
A 2018 analysis found brain size rising gradually across the hominin family. Even sympathetic scientists call a one-cause version “most certainly false”.
The full fact check
The strong form is not supported; a weaker form is possible but unproven. Our fact check rates each claim and links every source.
Educational only. Pictures are Shroomverse AI illustrations and film stills.