Read the paper. There is no mention of a purely plant based vegan diet in the study. Moreover the authors already note the point you're making. "In addition, th

Read the paper. There is no mention of a purely plant based vegan diet in the study. Moreover the authors already note the point you're making. "In addition, the participants of our cohorts have higher educational status and better availability of health care coverage. Therefore, results may not be directly generalizable to the general population."