How common is gluten sensitivity?

Gluten sensitivity is a broader category of which celiac disease is only a small subset.  The estimation of amount of gluten-sensitive people varies widely.  Here are some references on the web …

  • 60% to 70% of the population may be gluten-sensitive [reference]
  • I’ve long suspected that everyone has some degree of sensitivity to gluten, even if they’ve never been formally diagnosed and even if they don’t notice any overt symptoms after eating it. …  It might be 12%, or maybe 30%, or perhaps even a higher (or lower) percentage of the population.” – Mark Sisson