Maybe they don’t think of it as a food intolerance, but plenty of people have a food they just know sets them off. Maybe for you it’s a super-rich tomato sauce, or fresh cheese, or a cup of coffee. Whatever it is, housing some might leave you sweaty and unsettled. Or, perhaps worse, waking up with an upset stomach of the sort that has you rushing for the bathroom. No judgement! It’s a fact of life.
And while it’s easy to roll your eyes at many people’s rush self-diagnose—whether it’s pseudoscience about strawberries from Tom Brady or just that one friend who is only sometimes “not doing gluten right now”—people generally have a solid innate sense of what foods make them feel bad. Food intolerances are very real. So here’s how they work, and how to know if you have one. It’s not much more complicated than listening to your