> They also discovered “significantly higher" incidences of cancer in vegetarians, as well as increased rates of anxiety disorder and depression, although they

> They also discovered “significantly higher" incidences of cancer in vegetarians, as well as increased rates of anxiety disorder and depression, although they note that this is inconsistent with other research. Having scanned the original paper (https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0088278&type=printable https://journals.plos.org/plosone/article/file?id=10.1371/jo...) this seems like p-value hacking. If you check table 3 they report the p-values for the chi-squared test that they did across disease categories and dietary habits, it seems they are using a threshold of p<0.05 as being significant. The problem is that they have repeated this test across ALL the different conditions without adjusting this threshold of significance, and then handpicking the ones that satisfy p<0.05. At the very least they should correct for this by using something like a Bonferroni correction (https://en.wikipedia.org/wiki/Bonferroni_correction https://en.wikipedia.org/wiki/Bonferroni_correction).