Bland, low-fiber, starchy foods are the fastest way to firm up loose stools. White rice, bananas, plain toast, boiled potatoes, and applesauce top the list because they’re easy to digest and help your intestines reabsorb water. But food is only half the equation: replacing lost fluids matters just as much, and certain foods can make diarrhea significantly worse.
The BRAT Diet and Beyond
You’ve probably heard of the BRAT diet: bananas, rice, applesauce, and toast. It works as a starting point, but there’s no clinical research showing it’s better than other gentle foods. Harvard Health notes it’s fine for a day or two but unnecessarily restrictive. Your body needs protein and a wider range of nutrients to recover, so think of BRAT as a framework rather than a strict rule.
Other foods that are equally gentle on your gut include brothy soups, oatmeal, boiled potatoes, crackers, and unsweetened dry cereal. Once your stomach settles, typically within 24 to 48 hours, you can expand to cooked carrots, sweet potatoes without skin, cooked squash, avocado, skinless chicken or turkey, fish, and eggs. These are still bland and easy to digest but give your body the protein it needs to bounce back.
Why Starchy Foods Help
Diarrhea happens when your colon can’t absorb enough water from digested food. Starchy foods like white rice and boiled potatoes counter this directly. When starch reaches your colon, gut bacteria ferment it into short-chain fatty acids, which stimulate water reabsorption through the intestinal wall. The result is firmer, less watery stools.
Pectin, a type of soluble fiber found in bananas and applesauce, works through a similar mechanism. It stimulates the growth of cells lining the colon, which improves the gut’s ability to pull water back in. This is why bananas and applesauce show up on every diarrhea food list, not just because they’re bland, but because they contain a fiber that actively helps.
Protein for Recovery
Skipping protein slows your recovery. The key is choosing lean sources prepared without added fat. Well-cooked chicken breast, white fish, eggs, soft tofu, cottage cheese, and smooth yogurt are all well tolerated. Smooth nut butters work for some people too.
What to skip: fried meat, sausage, bacon, hot dogs, fatty or gristly cuts, and chunky nut butters. These are harder to digest and can irritate an already sensitive gut. Luncheon meats like bologna and salami are also poor choices during a bout of diarrhea.
Foods That Make Diarrhea Worse
Some foods actively pull water into your intestines, making loose stools even looser. Sugar alcohols are one of the biggest culprits. Sorbitol, commonly used in sugar-free candies, gum, and “dietetic” sweets, acts as an osmotic laxative. A CDC investigation into a diarrhea outbreak traced it directly to dietetic candies containing about 3 grams of sorbitol each. As little as 10 grams of sorbitol causes bloating and gas in most people, and 20 grams can trigger full-blown cramping and diarrhea. Children are even more sensitive. Check labels on anything marked “sugar-free.”
Other common triggers to avoid while you’re recovering:
- Dairy with lactose. If you’re even mildly lactose intolerant, diarrhea can temporarily worsen your ability to digest milk sugar. Yogurt and cottage cheese are usually fine because fermentation breaks down much of the lactose.
- Greasy or fried foods. Fat speeds up intestinal contractions, pushing food through before your colon can absorb water.
- Caffeine and alcohol. Both stimulate the gut and increase fluid loss.
- Raw vegetables and high-fiber foods. Normally healthy, but during diarrhea they add bulk your colon can’t process well. Stick to cooked vegetables until you’re back to normal.
- Spicy foods. Capsaicin irritates the gut lining and can accelerate transit time.
Fluids Matter as Much as Food
Diarrhea drains water and electrolytes fast. Signs of dehydration include extreme thirst, dark urine, dizziness, urinating less than usual, and skin that stays tented when you pinch and release it. In infants, watch for no wet diapers for three or more hours, no tears when crying, or a sunken soft spot on the skull.
Plain water helps, but it doesn’t replace lost sodium and potassium. The World Health Organization’s oral rehydration solution is simple to make at home: mix half a teaspoon (3 grams) of salt and 2 tablespoons (30 grams) of sugar into just over 4 cups (about 1 liter) of clean water. The sugar isn’t for taste. It activates a transport mechanism in your intestines that pulls sodium and water into your bloodstream. Sipping this throughout the day is more effective than drinking water alone.
Broth-based soups pull double duty here, providing both fluid and electrolytes along with easy-to-digest calories.
Probiotics Can Shorten Recovery
Certain probiotic strains reduce diarrhea duration by roughly one day, which matters when you’re miserable. The two strains with the strongest evidence are Lactobacillus rhamnosus GG (often labeled LGG) and Saccharomyces boulardii, a beneficial yeast.
For infectious diarrhea (stomach flu, food poisoning), a review of over 2,400 participants found LGG was most effective at a daily dose of at least 10 billion colony-forming units. Saccharomyces boulardii showed similar results at 1 to 10 billion CFU per day taken for 5 to 10 days. For antibiotic-associated diarrhea, LGG at 10 to 20 billion CFU per day reduced the risk in children by 71%. Look for these specific strains on the label, since not all probiotics are interchangeable.
You can also get probiotics through food. Plain yogurt with live active cultures is one of the few dairy products that tends to be well tolerated during diarrhea, and it delivers beneficial bacteria along with protein.
A Simple Meal Plan for the First 48 Hours
For the first day, keep it minimal: white rice or oatmeal, bananas, plain toast, applesauce, broth, and sips of oral rehydration solution between meals. Small, frequent meals are easier on your gut than three large ones.
On day two, if your stools are improving, add a lean protein like scrambled eggs, baked chicken breast, or soft tofu. Cooked carrots or peeled sweet potatoes can round out a meal. Continue avoiding dairy (except yogurt), caffeine, fried foods, and anything sugar-free.
By day three or four, most people can gradually return to their normal diet. Reintroduce foods one at a time so you can identify anything that triggers a setback. If diarrhea persists beyond two days in adults, involves blood or black stools, comes with a high fever, or produces six or more loose stools daily, that warrants prompt medical attention. For children, the threshold is lower: diarrhea lasting more than one day or any fever in infants calls for a doctor’s evaluation.