Reintroduction is the part of the process most people find harder than elimination. The results are rarely a clean yes or no, the cumulative effect catches you out, and your baseline on any given day affects the outcome as much as the food itself. A practical guide to what reintroduction actually involves and what to keep in mind along the way.

If you feel stuck with food sensitivities despite cutting more and more foods, the problem may not be your body but your approach. Here are the most common mistakes, from over-restriction to relying on inaccurate food intolerance tests, and what to do instead.