Elimination Diet Tracker: A 3-Week Plan You Can Actually Finish

An elimination diet has two halves, and almost everybody does the first one and skips the second. You cut foods out, you feel better or you do not, and then life resumes and nothing was ever actually proven.

The reintroduction half is where the answer lives. This plan keeps the restriction short on purpose so you still have the energy left to do it properly.

Week 0: log before you cut anything

Spend one week eating normally and recording everything. This baseline is the part people skip, and without it you have nothing to compare the restriction to. You also need a rough severity average, or "I think I feel better" is the best conclusion you will ever reach.

• Log every meal with a clock time and its ingredients
• Score every symptom 1 to 10 with its own clock time
• Record stool form on the Bristol scale if bowel habit is the issue
• Note sleep hours and a stress score each day

Weeks 1 and 2: the restriction

Cut the fermentable carbohydrate groups that account for most IBS reactions, following the low-FODMAP structure Monash University developed. Two weeks is enough to see a response in most people who are going to respond at all, and the ACG guidance treats a limited-duration low-FODMAP trial as a reasonable first step in IBS.

• Onion and garlic, including powders in stock, chips, and spice blends
• Wheat, rye, and barley in bread, pasta, and cereals
• Lactose: milk, soft cheese, ice cream
• Legumes: chickpeas, lentils, kidney beans, baked beans
• High-fructose fruit: apple, pear, mango, watermelon, cherries, honey
• Sugar alcohols: sorbitol, mannitol, xylitol, maltitol

Week 3 onward: reintroduce one group at a time

This is the part that produces answers. Reintroduce a single group over three days, with a small portion on day one, a normal portion on day two, and a larger portion on day three. Then return to the restricted baseline for two days before the next group, so a reaction cannot bleed into the following test.

Keep logging exactly as you did in week 0. If a group produces no reaction at three days and a full portion, put it back in your diet permanently. That is a win, and getting foods back is the entire point.

Why the tracking is the hard part

Six groups tested over three days each, with washouts in between, is more than a month of records where a single missing time stamp can invalidate a whole test. On paper that is a real chore, which is why an elimination diet tracker beats a notebook here.

FoodTrigger AI logs meals by ingredient with time stamps, scores symptoms by severity, and looks at the one-to-four hour window after each meal for the ingredients that keep reappearing. When something crosses a severity of 5, it flags the likely candidates instead of leaving you to scan a month of entries. You can start as a guest with no account, and Pro exports a dated summary for your doctor or dietitian.

Common mistakes

• Staying restricted for months. Long-term restriction narrows the diet and the gut microbiome without adding information.
• Testing two groups in the same week, which makes any reaction unattributable
• Judging a reaction on the small day-one portion alone, when dose is often what determines a response
• Ignoring sleep and stress, which can produce a bad day with no dietary cause at all
• Skipping the washout days between groups