Reintroduction: How You Find Your Actual Triggers

The basic shape of a challenge

You test one FODMAP group at a time using a food that contains mostly that group — for example, milk for lactose or honey for excess fructose. Over three days you eat a small, then medium, then larger portion, watching symptoms. Then you return to baseline eating for a couple of days before the next group.

Everything else stays low-FODMAP during a challenge, so any reaction points clearly at the group you're testing rather than an accidental stack.

A sensible testing order

• •Start with the group you miss most — motivation matters, and a pass immediately widens your menu.
• •Common single-group test foods: lactose → milk; fructose → honey; polyols (sorbitol) → a few dried apricots; fructans → 2 slices of wheat bread; GOS → a serving of chickpeas.
• •Avoid mixed foods for testing (apples carry both fructose and polyols) — they can't tell you which group reacted.

Reading your results honestly

A pass means that group, at that portion, is fine for you — put it back in your life. A mild reaction at the biggest portion usually means "enjoy in moderation," not "never again." A clear reaction at small portions marks a genuine trigger worth respecting.

Keep notes as you go: the combination of your scan history and your own symptom logs is exactly the record this phase needs. Memory is a terrible lab notebook.

After reintroduction: your personal diet

The end state isn't "low-FODMAP forever" — it's your own version: strict about your one or two real triggers, relaxed about everything else, with retests every few months because tolerance shifts over time. That's a far smaller, far more livable set of rules than the full elimination list.

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