" One 2009 study of lactose found that 14 out of 54 patients with documented intolerance to lactose reported symptoms after ingesting sugar pills. They were lactose intolerant, but it was their expectation of symptoms that made them sick. Strong nocebo effects were also observed in the studies of gluten sensitivity out of Monash University. "

― Alan Levinovitz , The Gluten Lie: And Other Myths About What You Eat