The evidence that ketogenic diet might help with schizophrenia symptom remission comes from two case reports that Palmer published in Schizophrenia Research in 2019. When discussing them, Palmer was quick to emphasise that “yes, it’s only two”, and that “case reports don’t prove anything. They’re not controlled. They come with tremendous amounts of bias.” But, Palmer noted, that can be important for generating hypotheses about what treatments might work. Palmer thought it was valuable to publish these case reports because remission of schizophrenia symptoms is incredibly rare.

Two case studies! The scientist quoted knows that it means nothing! Don’t read one article that might show something that confirms your bias and go “this is real.”