Lunch checklist: what to look at if you bloat by 3pm

If your bloating runs on a schedule, flat in the morning and uncomfortable by mid-afternoon, lunch deserves a closer look. On a busy workday it's often eaten quickly, chosen on the go and bigger than planned.

Use this checklist for two weeks. Each item comes with the reason behind it, so you can decide which ones are worth testing on your own lunches.

Before you eat

• Did you eat breakfast? A skipped breakfast can turn lunch into the biggest meal of the day. If that's your pattern, a small breakfast is an easy first experiment.
• Is lunch a size that leaves you comfortable, not stuffed? In an Australian diary study of people with functional dyspepsia, which involves ongoing fullness or discomfort after meals, fullness rose with how much energy and fat they ate (Pilichiewicz et al., 2009). Try a smaller lunch plus an afternoon snack.
• How rich is it? Creamy dressings, fried sides and cheesy sandwiches all add fat. In the same study, bloating tended to track with fat intake, although that link didn't reach statistical significance.

What's on the plate

• What kind of bread is it? In a Finnish trial, 87 people with IBS ate low-FODMAP rye bread and regular rye bread for four weeks each. On the low-FODMAP bread, flatulence, abdominal pain, cramps and stomach rumbling were milder and breath hydrogen was lower, although overall symptom scores and quality of life didn't change (Laatikainen et al., 2016). If a sandwich is your daily lunch, try a different bread for two weeks, or swap in a rice or potato base.
• Is there a big dose of fruit sugar? A large fruit smoothie or juice with lunch can add up. In a study of 20 healthy adults, nobody tested positive for malabsorbing 15 grams of fructose, and the two people who tested positive at 25 grams had no symptoms. At 50 grams, 80% tested positive and 55% had symptoms (Rao et al., 2007). One piece of fruit is a very different dose from a blender full.
• Are the vegetables raw or cooked? There's no single right answer here, but it's an easy variable to test. If a big raw salad often comes before your worst afternoons, try the same vegetables cooked for a week.
• Is it the same lunch every time you bloat? Look at your notes. A pattern that repeats is more useful than any general rule.

What's in your glass

• Is it fizzy? A review of carbonated drinks and digestion noted that symptoms of stomach distress from carbonation appear only when people drink more than 300 ml (Cuomo et al., 2009). A standard 12-ounce can is about 355 ml, so one can of sparkling water with lunch already goes past that line.
• Could you switch to still? Try still water or unsweetened iced tea at lunch for two weeks and save the sparkling drink for another time of day.

How you eat it

• Did you sit down? Lunch eaten while answering emails is easy to finish in five minutes without noticing how much you had. Give it 15 to 20 minutes if your schedule allows.
• Did you move afterward? In a small study of eight healthy adults, light pedaling during a gas test reduced the amount of gas retained and the abdominal distension that came with it (Dainese et al., 2004). A 10-minute walk after lunch is the everyday version.

Five lunches to try

These are moderate in size, not fried, and easy to adjust around your own triggers:

• A rice bowl with salmon, cooked carrots, cucumber, olive oil and lemon
• Two eggs with roasted potatoes and sauteed spinach
• Chicken and rice soup, made without onion if onion bothers you
• Tuna with a simple vinaigrette over greens, with a piece of fruit you tolerate
• Last night's dinner, portioned into a lunch-size container instead of eaten from the pot

If you pack lunch the night before, you also avoid a common workday trap: deciding what to eat when you're already hungry and short on time. Keep dressings and sauces in a small separate container, and pack a small snack for mid-afternoon so lunch doesn't have to carry you all the way to dinner.

How to use this checklist

Don't change everything at once. Pick the two items where your current lunch scores worst, change only those for two weeks, and rate your bloating at 3pm each day on a 0 to 10 scale. If nothing moves, look beyond lunch: breakfast, snacks, drinks and stress through the day.

And see a doctor rather than adjusting lunch if bloating is new and happens most days, especially with early fullness, pelvic pain or urinary urgency, or if you notice blood in your stool, weight loss you can't explain, or symptoms that wake you at night. Here's more on when bloating needs a medical check.

Sources

1. Pilichiewicz AN, Horowitz M, Holtmann GJ, Talley NJ, Feinle-Bisset C. Relationship between symptoms and dietary patterns in patients with functional dyspepsia. Clin Gastroenterol Hepatol. 2009;7(3):317-22. PMID 18929687
2. Laatikainen R, Koskenpato J, Hongisto SM, et al. Randomised clinical trial: low-FODMAP rye bread vs. regular rye bread to relieve the symptoms of irritable bowel syndrome. Aliment Pharmacol Ther. 2016;44(5):460-70. PMID 27417338
3. Rao SS, Attaluri A, Anderson L, Stumbo P. Ability of the normal human small intestine to absorb fructose: evaluation by breath testing. Clin Gastroenterol Hepatol. 2007;5(8):959-63. PMID 17625977
4. Cuomo R, Sarnelli G, Savarese MF, Buyckx M. Carbonated beverages and gastrointestinal system: between myth and reality. Nutr Metab Cardiovasc Dis. 2009;19(10):683-9. PMID 19502016
5. Dainese R, Serra J, Azpiroz F, Malagelada JR. Effects of physical activity on intestinal gas transit and evacuation in healthy subjects. Am J Med. 2004;116(8):536-9. PMID 15063815

This article is for general information and isn't medical advice. Talk to your healthcare provider about bloating that is new, happens most days or comes with other symptoms.