When you have diarrhea, the best foods are bland, easy to digest, and rich enough in nutrients to help your body recover. Bananas, rice, plain toast, brothy soups, boiled potatoes, oatmeal, and crackers are all solid starting points. But you don’t need to limit yourself to a short list. The goal is to eat simple foods that won’t further irritate your gut while keeping up your energy and hydration.
Why the BRAT Diet Is a Starting Point, Not a Rule
You’ve probably heard of the BRAT diet: bananas, rice, applesauce, and toast. It’s been recommended for decades, and those four foods are genuinely gentle on the stomach. But there’s no clinical research comparing the BRAT diet to other approaches, and sticking to only those foods for more than a day or two can leave you short on protein and other nutrients you need to recover.
A better strategy is to use BRAT foods as a foundation and expand from there. Brothy soups, oatmeal, boiled potatoes, crackers, and unsweetened dry cereals are equally easy to digest. Once your stomach starts to settle, adding cooked carrots, sweet potatoes (without skin), cooked squash like butternut or pumpkin, avocado, skinless chicken or turkey, fish, and eggs gives you the protein and vitamins your body needs without overwhelming your digestive system.
Foods That Help Firm Up Your Stool
Soluble fiber is your friend during a bout of diarrhea. Unlike insoluble fiber (the rough, bulky kind found in raw vegetables and whole grains), soluble fiber absorbs water in your gut and forms a gel-like substance that helps solidify loose stool. Bananas, applesauce, oatmeal, and white rice are all good sources. Cooked carrots and peeled potatoes work well too.
Pectin, a type of soluble fiber found naturally in apples, bananas, and citrus fruits, is particularly effective. In the colon, pectin binds with calcium and forms a water-holding gel that helps produce more normal feces. That gel also provides gentle mechanical stimulation to the colon wall, encouraging the kind of healthy contractions that move stool through at a normal pace rather than the rapid, watery transit that defines diarrhea.
What to Avoid Until You Recover
Some foods actively make diarrhea worse. Knowing what to skip is just as important as knowing what to eat.
- Dairy products. Lactose, the natural sugar in milk, is already difficult for many people to digest. During a diarrhea episode, your gut’s ability to break down lactose drops further, which can worsen symptoms. Plain yogurt with live cultures is sometimes an exception, since the bacteria have already partially broken down the lactose.
- Greasy and high-fat foods. When fat isn’t absorbed properly in the upper digestive tract, it passes into the colon, where it gets broken down into fatty acids. Those fatty acids trigger the colon to secrete fluid, making diarrhea worse.
- Sugar-free gum, candy, and mints. These often contain sorbitol, mannitol, or xylitol. These sugar alcohols pull water into the intestine and loosen bowel movements, essentially the opposite of what you want.
- Caffeine and alcohol. Both speed up gut motility and promote fluid loss, compounding dehydration.
- Raw vegetables, beans, and whole grains. High in insoluble fiber, these can stimulate the gut and increase the frequency of loose stools.
- Spicy foods. Capsaicin irritates the gut lining and can accelerate transit time through the intestines.
Hydration Matters More Than Food
The biggest risk with diarrhea isn’t the diarrhea itself. It’s the fluid and electrolyte loss that comes with it. Every watery stool pulls sodium, potassium, and water out of your body. Replacing those losses is the single most important thing you can do.
Water alone isn’t enough because it doesn’t replace lost electrolytes. Oral rehydration solutions (available over the counter) are the gold standard. Broth-based soups pull double duty by providing both fluid and sodium. Coconut water is a reasonable natural source of potassium. If you’re sipping throughout the day rather than gulping large amounts at once, your body absorbs the fluid more effectively.
Signs that dehydration is becoming serious include producing little or no urine, a rapid heartbeat, rapid breathing, confusion, or feeling faint. These warrant immediate medical attention.
When to Start Eating Again
A common instinct is to avoid food entirely until the diarrhea stops. That’s not necessary and may slow your recovery. A large Cochrane review looking at refeeding after acute diarrhea found no evidence that eating early (within 12 hours of starting rehydration) increases complications or prolongs symptoms compared to waiting 20 to 48 hours. In other words, if you feel up to eating, eat.
Start with small portions of bland foods. You don’t need to force a full meal. A few bites of banana, a small bowl of white rice, or a cup of broth is enough to begin. As your symptoms improve over the next day or two, gradually reintroduce more variety: cooked vegetables, lean proteins, and eventually your normal diet. Most acute diarrhea episodes resolve within two to three days, and your diet can return to normal shortly after that.
Do Probiotics Help?
Probiotics, particularly strains found in some yogurts and supplements, have a mixed track record for diarrhea. Some research shows that certain strains can modestly reduce how long diarrhea lasts, though a recent large clinical trial found no significant effect. The overall evidence suggests a small benefit is possible, but probiotics aren’t a reliable fix on their own.
If you want to try them, fermented foods like plain yogurt with live active cultures or kefir are reasonable options once your stomach can tolerate them. They’re unlikely to make things worse and provide some nutritional value regardless of their probiotic effects.
A Simple Meal Plan for Recovery
Here’s what a practical day of eating might look like when you’re dealing with diarrhea:
- Morning: Plain oatmeal made with water, half a banana, and small sips of an electrolyte drink.
- Midday: Chicken broth with a few plain crackers or white toast.
- Afternoon: Applesauce or a small serving of white rice.
- Evening: Baked or boiled skinless chicken with mashed potatoes (no butter or cream). Broth on the side.
By day two or three, if things are improving, you can add cooked carrots, sweet potatoes, scrambled eggs, or fish. The key throughout is to keep portions small, eat frequently rather than in large meals, and keep drinking fluids between bites.