Is lettuce hard on the digestive system?
Follow up with a doctor if you have trouble digesting lettuce: While many raw vegetables can be tough on digestion, lettuce usually isn't one of them. If you find you're having trouble digesting this leafy green, it may be worth mentioning to your doctor.
Plus, Brad Dieter, a NASM-certified nutrition coach and research scientist, adds that romaine can be easier on your GI tract since it's slightly less fibrous and higher in water.
While iceberg lettuce is generally considered easier to digest, some people will experience difficulty passing lettuce through their system. If you experience gastrointestinal discomfort after eating iceberg lettuce, you may have an intolerance.
Leaf lettuce. One of the more nutritious of the lettuce family, leaf lettuce is low in calories and high in potassium and vitamins A and K.
Try this today: If you have IBS, lettuce is generally safe to eat. Try eating it as a side or adding it to your salads or sandwiches. Brighter-colored lettuces are more nutritious, so pick red, green, Boston, or romaine over iceberg lettuce whenever possible.
Leafy greens, such as spinach or kale, are excellent sources of fiber, as well as nutrients like folate, vitamin C, vitamin K and vitamin A. Research shows that leafy greens also contain a specific type of sugar that helps fuel growth of healthy gut bacteria.
Most leafy greens do not cause gas, even in people with irritable bowel syndrome, although tolerance can vary. Everybody has a different gut flora and may react differently to different foods. Romaine lettuce, iceberg lettuce, Boston lettuce and raw spinach can be used to prepare healthy salads.
Raw, cruciferous vegetables are tough to digest because they're fibrous. If you have an unhealthy gastrointestinal tract or food sensitivities, then you're more likely to have a bad reaction to digesting raw vegetables.
...
Good choices of canned or cooked varieties of vegetables include:
- yellow squash without seeds.
- spinach.
- pumpkin.
- beets.
- green beans.
- carrots.
To date, there is no clinical evidence that raw vegetables do or do not worsen IBS symptoms. Still, many people with IBS complain about bloating, gas, constipation, and even diarrhea after eating raw veggies.
Does romaine lettuce cause gas and bloating?
Vegetables to Eat: Spinach, cucumbers, lettuce, sweet potatoes and zucchini are all great to eat and do not cause bloating.
Reason #1: Kale and other greens are high in fiber.
While that can help digestion for some individuals, others can be sensitive to high-fiber foods2.

Worst: Iceberg Wedge Salad
It also falls short in the nutrition department. That's because iceberg lettuce contains fewer vitamins and minerals than most dark leafy greens.
Some of the most nutritious greens include spinach, kale, romaine, watercress, and arugula (see "Salad greens by the numbers"). They are rich in a combination of vitamins A, C, and K; several B vitamins (including folate); and potassium.
Cos or romaine lettuce has a better nutritional profile than iceberg lettuce. Even though romaine lettuce still contains a significant amount of water at nearly 95%, the amounts of fiber, vitamins, and minerals are higher.
- Eggs. Eggs are easy to digest and don't upset the colon. ...
- Lean meats. Lean meats are another great source of protein and give you a lot of food options for meal planning. ...
- Salmon and other fish high in omega-3s. ...
- Low-FODMAP foods.
Lettuce: Butter lettuce has been lab tested by Monash and has no FODMAP content. Lettuce: Red Leaf lettuce, also called red coral on the Monash app, has been lab tested and has no FODMAP content. Endive, leafy: Monash has lab tested leafy endive and it contains no FODMAPs.
...
Low-FODMAP greens:
- Arugula (rocket lettuce)
- Bok choy.
- Collard greens.
- Common cabbage.
- Endive.
- Kale.
- Lettuce.
- Radicchio.
Fatty foods, such as chips, burgers and fried foods, are harder to digest and can cause stomach pain and heartburn. Cut back on greasy fried foods to ease your stomach's workload. Try to eat more lean meat and fish, drink skimmed or semi-skimmed milk, and grill rather than fry foods.
Some patients complain that eating lettuce gives them gas and abdominal distention; however, there is no evidence in support of this assertion.
Can eating too much salad cause stomach problems?
The short answer is: Yep. According to Food Fix founder Heather Bauer, RD, CND, all those raw veggies can seriously stress out your GI tract. "I hear over and over again from clients that they start eating salads to be healthier and end up feeling bloated," Bauer says.
References
- https://endodc.com/news/what-is-the-best-diet-for-heartburn
- https://www.healthline.com/health/digestive-health/peanut-butter-and-acid-reflux
- https://entinstitute.com/6-veggies-to-prevent-acid-reflux/
- https://www.sciencedirect.com/science/article/pii/S0889157513001348
- https://www.southernrefluxcenter.com/acid-reflux-treatment-in-albany/home-remedies-for-your-acid-reflux/
- https://www.sleepstation.org.uk/articles/sleep-tips/lettuce-and-sleep/
- https://www.uhhospitals.org/blog/articles/2014/04/best-and-worst-foods-for-acid-reflux
- https://morocco-gold.com/can-the-best-olive-oil-help-fight-gerd/
- https://www.gerdhelp.com/blog/gerd-diet-the-best-foods-for-controlling-reflux/
- https://www.hitchcockfarms.com/blog/15-surprising-nutritional-benefits-of-romaine-lettuce
- https://www.drgourmet.com/gerd/salad.shtml
- https://www.health.harvard.edu/staying-healthy/11-stomach-soothing-steps-for-heartburn
- https://wakegastro.com/patient-info/gerd-diet/
- https://www.cbsnews.com/pictures/holiday-heartburn-7-ways-to-avoid-it/
- https://www.healthline.com/health/gerd/how-do-i-know-if-my-gerd-is-getting-better
- https://www.businessinsider.com/best-salad-greens-kale-spinach-lettuce-2017-6
- https://fruitsandveggies.org/expert-advice/butter-lettuce-easy-digest-people-intestenial-disorders/
- https://guiltyeats.com/2022/07/20/romaine-lettuce-safe-not/
- https://nrgi.org/education/gastroesophageal-reflux-heartburn
- https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/diverticulitis-diet/faq-20058293
- https://blogs.davita.com/kidney-diet-tips/lettuce-help-toss-kidney-friendly-salad/
- https://www.ecowatch.com/10-foods-that-make-you-feel-bloated-and-10-that-dont-1882129256.html
- https://www.livestrong.com/article/467015-can-you-eat-cucumbers-with-gerd/
- https://www.donat.com/how-long-does-it-take-to-digest-food/
- https://time.com/2827608/41-superfoods-ranked-by-how-healthy-they-are/
- https://blog.spoonfulapp.com/craveable-low-fodmap-salad/
- https://pharmeasy.in/blog/ayurveda-uses-benefits-side-effects-of-lettuce/
- https://www.wildoats.com/blog-posts/another-reason-to-skip-bagged-lettuce/
- https://www.cooperhealth.org/services/gastroesophageal-reflux-disease-gerd/diet
- https://stilltasty.com/fooditems/index/17559
- https://tddctx.com/the-most-popular-foods-to-harm-and-help-your-acid-reflux/
- https://www.healthline.com/health/foods-good-for-high-blood-pressure%23overview1
- https://onlinelibrary.wiley.com/doi/full/10.1111/nmo.13703
- https://www.medicinenet.com/how_long_does_gerd_take_to_heal/article.htm
- https://piedmonthealthcare.com/food-and-lifestyle-changes-to-help-relieve-your-gerd-symptoms/
- https://www.mynetdiary.com/when-is-the-best-time-to-eat-salad.html
- https://www.tums.com/amp/reasons-salad-upset-stomach.html
- https://greatist.com/eat/romaine-lettuce
- https://www.cdc.gov/foodsafety/communication/leafy-greens.html
- https://www.ndtv.com/food/weight-loss-top-9-vegetables-to-include-in-your-diet-to-burn-belly-fat-1885607
- https://www.tums.com/amp/foods-that-can-reduce-acid-reflux.html
- https://www.fodmapeveryday.com/recipes/no-fodmap-leafy-green-salad/
- https://www.healthline.com/nutrition/acidic-foods
- https://www.epicurious.com/archive/howtocook/primers/salad-dressing-vinaigrette
- https://www.healthline.com/health/easy-to-digest-foods
- https://www.verywellhealth.com/the-ten-best-foods-for-ibs-1945014
- https://www.denverhealthmedicalplan.org/blog/5-foods-promote-colon-health
- https://www.hopkinsmedicine.org/health/wellness-and-prevention/5-foods-to-improve-your-digestion
- https://kidneynutritioninstitute.org/salads-for-kidney-disease/
- https://www.fishertitus.org/healthy-living/healthy-living-blog/2018/what-foods-cleanse-your-liver/
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6049580/
- https://medlineplus.gov/ency/patientinstructions/000120.htm
- https://www.health.harvard.edu/staying-healthy/salad-greens-getting-the-most-bang-for-the-bite
- https://www.chicagotribune.com/dining/ct-xpm-2011-02-16-sc-food-0211-greens-20110216-story.html
- https://www.netmeds.com/health-library/post/romaine-lettuce-health-benefits-nutrition-uses-and-recipes
- https://www.tuasaude.com/en/laxative-foods/
- https://foxy.com/what-we-grow/green-leaf-lettuce
- https://opa.org.uk/the-skinny-on-salad-for-your-acid-reflux-diet/
- https://www.nhs.uk/conditions/heartburn-and-acid-reflux/
- https://www.thermofisher.com/diagnostic-education/hcp/wo/en/resource-center/allergen-encyclopedia/whole-allergens.html?key=f215
- https://www.tums.com/amp/reduce-acid-reflux-diet.html
- https://www.medicalnewstoday.com/articles/319962
- https://www.amymyersmd.com/article/cooked-vegetables-raw/
- https://kidneystones.uchicago.edu/how-to-eat-a-low-oxalate-diet/
- https://www.livestrong.com/article/518590-is-there-anything-that-will-help-me-digest-lettuce/
- https://www.foodnavigator.com/Article/2014/12/10/Leafy-greens-thin-blood-and-help-oxygen-circulation-Study
- https://integrisok.com/resources/on-your-health/2022/april/foods-to-avoid-with-acid-reflux
- https://www.healthline.com/nutrition/9-foods-to-help-you-sleep
- https://www.baywaterfarms.com/blog/4-health-benefits-romaine-lettuce/
- https://www.fanaticallyfood.com/is-iceberg-lettuce-hard-to-digest/
- https://www.verywellhealth.com/ibs-and-raw-vegetables-3980667
- https://www.healthline.com/nutrition/7-health-benefits-of-cucumber
- https://www.health.com/condition/gerd/heartburn-easing-foods-that-fight-gerd
- https://economictimes.indiatimes.com/magazines/panache/heartburn-troubles-foods-to-ease-the-problem-and-make-gut-feel-good/potatoes/slideshow/62898134.cms
- https://theconversation.com/feeling-bloated-hungry-or-bored-after-salad-these-tips-might-help-190843
- https://www.webmd.com/diet/health-benefits-lettuce
- https://www.forkly.com/food/15-foods-to-help-treat-gerd/
- https://www.integrativeurgentcare.com/blog/eating-romaine-lettuce-ecoli-warning-signs-to-look-for
- https://www.eatthis.com/news-what-happens-body-eat-romaine-lettuce/
- https://www.foodandwine.com/how/train-yourself-to-be-a-better-cook
- https://www.natureplusyou.com/blogs/blog/dos-and-donts-of-digestion-friendly-salads
- https://www.consumerreports.org/food-safety/dont-eat-romaine-lettuce-consumer-reports-experts-advise/
- https://www.nhs.uk/live-well/eat-well/digestive-health/good-foods-to-help-your-digestion/
- https://healthyeating.sfgate.com/everyday-food-iron-2183.html
- https://www.webmd.com/diet/ss/slideshow-best-worst-salads
- https://www.mayoclinic.org/diseases-conditions/e-coli/symptoms-causes/syc-20372058
- https://www.healthline.com/health/food-nutrition/romaine-lettuce
- https://www.netmeds.com/health-library/post/acid-reflux-7-awesome-foods-that-you-should-add-in-your-diet-to-ease-heartburn
- https://www.cookinglight.com/news/is-my-romaine-lettuce-bad-ecoli-outbreak
- https://chefsforseniors.com/blog/top-anti-inflammatory-foods
- https://houstonheartburn.com/top-5-foods-that-ease-your-heartburn/
- https://www.webmd.com/heartburn-gerd/ss/slideshow-foods-fight-gerd
- https://www.ndtv.com/food/heres-why-you-should-include-more-lettuce-in-your-daily-diet-1986799
- https://theviewfromgreatisland.com/is-your-salad-safe-a-guide-to-leafy-greens/
- https://www.permaculturenews.org/2017/07/20/romaine-lettuce/
- https://www.gastroconsa.com/acid-reflux-diet-8-foods-to-eat-avoid/
- https://www.downtoearth.org/articles/health-tips/1775/10-foods-to-help-you-lose-weight
- https://www.hopkinsmedicine.org/health/wellness-and-prevention/gerd-diet-foods-that-help-with-acid-reflux-heartburn
- https://www.healthline.com/nutrition/lettuce-and-ibs
- https://www.lybrate.com/topic/benefits-of-iceberg-lettuce-and-its-side-effects
- https://www.insider.com/stopped-eating-salad-for-health-2017-9
- https://recipes.timesofindia.com/articles/food-facts/how-much-time-your-body-takes-to-digest-these-foods/photostory/66652968.cms
- https://money.com/how-to-stretch-your-stomach-before-thanksgiving/
- https://www.healthline.com/nutrition/foods-that-keep-you-awake
- https://italiangardensmtx.com/salad-before-or-after-a-meal/
- https://ageright.org/2016/06/08/leafy-greens-and-coumadin/
- https://foodandhealth.com/new-mcdonalds-salads/
- https://www.medicalnewstoday.com/articles/319725
- https://foodzilla.io/questions/are-blueberries-acidic
- https://www.healthline.com/health/gerd/diet-nutrition
- https://allieddigestivehealth.com/the-best-worst-foods-for-ibs/
- https://www.webmd.com/heartburn-gerd/guide/reflux-disease-gerd-1
- https://iwaspoisoned.com/product/salad
- https://www.livestrong.com/article/488821-lettuce-and-digestion-problems/
- https://healthyeating.sfgate.com/baby-spinach-vs-lettuce-2789.html
- https://www.incredibleegg.org/professionals/manufacturers/real-egg-functionality/ph-stability
- https://www.self.com/story/e-coli-symptoms-romaine-lettuce
- https://www.healthcentral.com/article/reflux-friendly-cooking-yummy-shrimp-and-rice
- https://economictimes.indiatimes.com/magazines/panache/heartburn-troubles-foods-to-ease-the-problem-and-make-gut-feel-good/egg-whites/slideshow/62898129.cms
- https://www.urologyspecialistsofmilford.com/blog/552594-kidney-stone-diet-foods-to-eat-and-avoid
- https://utswmed.org/medblog/letting-up-on-lettuce/
- https://www.mayoclinic.org/diseases-conditions/dumping-syndrome/symptoms-causes/syc-20371915
- https://www.today.com/health/best-foods-people-gerd-or-acid-reflux-t109070
- https://www.belmarrahealth.com/non-gassy-foods-prevent-flatulence/
- https://www.kidney.org/atoz/content/leafy-green-vegetables
- https://www.wellandgood.com/how-much-salad-is-healthy/
- https://www.healthline.com/health/barretts-esophagus-diet
- https://hillsfamilydental.com/5-acidic-foods-you-should-avoid/
- https://preferredresearchpartners.com/10-foods-add-diet-acid-reflux/
- https://www.health.com/condition/sleep/lettuce-water-make-you-sleepy
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6899808/
- https://dermnetnz.org/topics/lettuce
- https://www.genexa.com/es/blogs/healthy-dose/how-to-make-the-perfect-heartburn-fighting-salad/
- https://thesurgicalclinics.com/8-foods-bad-for-gerd/
- https://www.healthline.com/health/digestive-health/honey-for-acid-reflux
- https://www.chick-fil-a.com/stories/food/why-does-my-salad-look-different-chick-fil-a-is-testing-new-recipes-at-certain-locations
- https://medicine.uq.edu.au/article/2022/11/feeling-bloated-hungry-or-bored-after-salad-these-tips-might%C2%A0help
- https://www.healthcentral.com/article/ultimate-list-of-reflux-friendly-road-snacks
- https://www.medicalnewstoday.com/articles/iceberg-lettuce
- https://eatpallet.com/how-do-restaurants-keep-lettuce-crisp/
- https://healthyeating.sfgate.com/nongascausing-vegetables-1646.html
- https://www.everydayhealth.com/gerd/top-15-heartburn-remedies/
- https://www.bonappetit.com/story/romaine-lettuce-is-good-for-you-healthy
- https://pubs.acs.org/doi/pdf/10.1021/ja01356a043
- https://www.healthline.com/nutrition/14-healthiest-vegetables-on-earth
- https://healthynestnutrition.com/how-to-prevent-salad-bloat/
- https://elitelv.com/6-ways-to-remove-sugar-from-your-diet/
- https://www.tampabayrefluxcenter.com/acid-reflux-gerd-blog/2016/6/10/6-summer-foods-that-trigger-heartburn
- https://www.kent.co.in/blog/6-food-items-that-you-should-never-eat-raw/
- https://www.healthshots.com/healthy-eating/nutrition/these-gut-friendly-foods-will-boost-your-digestion-naturally/
- https://www.gastroconsa.com/8-foods-that-alleviate-heartburn/
- https://altifarm.com/blogs/health-food/lettuce-for-burgers
- https://www.healthline.com/health/gerd/foods-to-avoid