Numerous studies have shown that severe early life stress can cause long term cognitive and learning impairments (ex. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3050094/)

But I have not found any studies that look into circumcision and cognitive outcome. The only study I've found is this recent German study: http://www.nature.com/tp/journal/v7/n3/full/tp201723a.html

Some tell me there are methodological flaws (such as small sample size and ineffective means to measure stress-related disorders). I personally can't spot any problems, but I'm not a neuroscientist.

What do you guys think in regards to this? Can an acute but severe bout of stress to a neonate cause any permanent neurological changes and cognitive impairments?


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