Published by PMR of NY & CT
Your digestive tract is home to trillions of bacteria and other microbes, together called your gut microbiome. What you eat feeds them, and they in turn help break down food, make certain vitamins and support the lining of your intestines. That's why the foods good for digestion tend to be the ones that keep those microbes well fed.
You don't need special products or a strict plan. For most people, a wide variety of plant foods, a few fermented foods and enough fluid go a long way, with less of the heavily processed stuff. Here's what to put on your list.
How food shapes your gut microbiome
Much of the fiber you eat reaches your large intestine undigested. There, gut bacteria ferment it into short-chain fatty acids, compounds that help nourish the cells lining your colon. Research suggests that people who eat a wider range of plant foods tend to have a more diverse mix of gut bacteria, which is generally seen as a sign of a healthy gut.
The science is still young, and no single food transforms your microbiome. Variety over the course of a week matters more than any one "superfood."
Foods good for digestion, group by group
Fermented foods with live cultures
Fermented foods can add live microbes to your diet, and some research links eating them regularly with a more diverse microbiome. Options include:
- Kefir, a tangy, drinkable cultured milk
- Yogurt labeled "live and active cultures"
- Refrigerated sauerkraut and kimchi, since shelf-stable jars are usually heat-treated
- Miso, stirred into soup after it comes off the heat
Many fermented foods are high in salt, so check labels if you're watching your sodium.
Prebiotic foods that feed helpful bacteria
Prebiotics are types of fiber your gut bacteria especially like. You'll find them in:
- Onions, leeks and garlic
- Asparagus and artichokes
- Bananas that are still a little green
- Foods with chicory root fiber, often listed as inulin
These foods can cause gas at first, and people with irritable bowel syndrome (IBS) often find them hard to tolerate.
Foods that help keep you regular
Some foods have been studied specifically for constipation:
- Prunes, which pair fiber with sorbitol, a natural sugar that draws water into the bowel
- Green kiwifruit, which studies suggest may ease constipation when eaten daily
- Whole-grain rye bread, which eased mild constipation in a small study
- Chia seeds and ground flaxseed, which soak up water, so drink plenty with them
Drinks that support digestion
Water is the drink your gut needs most. It keeps stool soft and helps fiber do its job. Beyond that:
- Coffee makes the colon contract in some people, which is why it can send you to the bathroom.
- Ginger tea may help ease mild nausea.
- Peppermint tea can feel soothing, but peppermint may make heartburn worse.
Alcohol can irritate your gut and disrupt sleep, so less is better.
Foods to eat less often
A gut-friendly diet still has room for treats. It helps to limit:
- Ultra-processed foods, such as packaged snacks and fast food, which are usually low in fiber and crowd out plants
- Red and processed meats, such as bacon, ham and hot dogs, since diets high in them are linked with a higher risk of colorectal cancer
- Fried and very greasy meals, which can trigger heartburn or loose stools
When you do have a burger, add a bean salad or roasted vegetables on the side.
Simple ways to add these foods to your week
- Blend kefir with frozen fruit for a quick breakfast.
- Stir ground flaxseed into yogurt.
- Add sautéed leeks or onions to eggs, soups and grain bowls.
- Keep refrigerated sauerkraut or kimchi on hand as a topping.
- Snack on a kiwi or a few prunes.
- Try a new vegetable, bean or grain each week, such as bok choy, chickpeas or farro.
Add one new food at a time, in small portions, so your gut has time to adjust.
When food isn't the whole answer
Even foods good for digestion can bother some people. If you have IBS, inflammatory bowel disease, celiac disease or diverticular disease, talk with your doctor and a registered dietitian before making big changes.
See your doctor if symptoms keep returning despite healthy eating, or if you have bloody stools, weight loss you can't explain, ongoing vomiting or pain that disturbs your sleep. Severe, constant belly pain, especially with fever, needs emergency care.
Frequently asked questions
Should I take a probiotic supplement?
Most healthy people don't need one. Research is promising for some specific uses, such as preventing diarrhea linked to antibiotics, but benefits depend on the strain and the condition, and product quality varies. Supplements aren't reviewed for effectiveness before they're sold. Check with your doctor or pharmacist first, especially if you have a weakened immune system or a serious illness.
Is apple cider vinegar good for digestion?
There's little good evidence that it improves digestion, eases bloating or treats acid reflux. Because it's very acidic, drinking it straight can irritate your throat and wear away tooth enamel. It may also interact with some medicines, including insulin and diuretics. If you'd like to use it, dilute it or add it to a salad dressing, and check with your doctor if you take daily medicines.
Can a chiropractor help with digestion?
There's little reliable evidence that chiropractic adjustments improve digestion or treat problems such as reflux, IBS or constipation. Chiropractic care is best supported for low back and neck pain, where it may ease symptoms and help you stay active. For ongoing digestive symptoms, start with your primary care doctor or a gastroenterologist.
Get back to the activities you enjoy
Eating well and staying active support each other. If back pain, joint pain or an injury is limiting how you move, Physical Medicine & Rehabilitation of NY & CT (PMR) offers hands-on care and exercise-based rehab. Explore our services, or request an appointment and our team will contact you to set up a visit.
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