1.5 years ago I did a food sensitivity test, and it came back “yes”. I gave up wheat, eggs, and milk. After 4 weeks my chronic heartburn was gone and I generally felt better. Not better enough to stick with it indefinitely- at the beginning of 2014 I fell off the wagon due to a combination of stress and changes in my access to food. The problem with sensitivities is that it’s a very delayed feedback mechanism. One bite of foods I am sensitive too doesn’t bother me at all, in the moment or later. Conversely, giving up all those (delicious) foods doesn’t immediately make me feel better.
After many false starts, I re-gave up all the sensitivity inducing foods in August, and was pretty irked when my heartburn continued for weeks. But like last year, I suddenly noticed that only do I not have heart burn, but I haven’t for weeks. I forgot that it was a thing I had. And sometime in the last three weeks my skin became flawless.
No, one subject-aware case study does not prove a thing. But when you consider how much the subject wanted the opposite result because that was where the ice cream was, it becomes deserving of further study.