Joe Rogan Experience #2560 - David Grusch · Aired Sep 30, 2026
Claim summary · not a verbatim quotation
Elongated skulls found in Peru have a brain capacity 20 to 30 percent larger than humans.
The finding
What the evidence shows
The idea that Peru's elongated skulls hold 20 to 30 percent more brain than ours comes from alternative-history promoters, who have never shown how they got the number. Measurements of 34 reshaped Peruvian skulls in museum collections averaged about 1,277 cc, inside the normal human range of roughly 950 to 1,800 cc. Head binding changes a skull's shape, not how much it holds, and a fused or missing sagittal seam is also common in ordinary human skulls.
Read the supporting source · ahotcupofjoe.net ↗Quick answer & review status
Quick answer
Is it true that Elongated skulls found in Peru have a brain capacity 20 to 30 percent larger than humans?
No, not as stated. The idea that Peru's elongated skulls hold 20 to 30 percent more brain than ours comes from alternative-history promoters, who have never shown how they got the number. Measurements of 34 reshaped Peruvian skulls in museum collections averaged about 1,277 cc, inside the normal human range of roughly 950 to 1,800 cc. Joe Rogan said it (matched by voice) on Joe Rogan Experience #2560 - David Grusch, aired Sep 30, 2026, at 1:48:47. The supporting source is ahotcupofjoe.net, linked below.
The context belongs here.
No separately verified on-air correction is recorded for this check. That is not a claim that nobody corrected it.
- Attribution
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- Editorial context review
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- Coverage
- One selected claim from the episode
Revisions to this check
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