How are we to know the percentage of celiac sufferers in the past compared to now when the methods we have to diagnose are difficult at best. Also celiac is 'u

How are we to know the percentage of celiac sufferers in the past compared to now when the methods we have to diagnose are difficult at best. Also celiac is 'under the radar' of many physicians and many modern cases go undiagnosed (myself until this year). The writer made many good points but, in my experience, should probably have done more research in this area.