When you’re fighting off a cold, flu, or stomach bug, the right foods can ease symptoms, keep you hydrated, and give your body the fuel it needs to recover. The best choices are simple: broth-based soups, ginger, bland starches, honey, and probiotic-rich foods. Here’s how each one helps and how to use them.
Chicken Soup Does More Than Comfort
Chicken soup has a reputation as the go-to sick food, and lab research backs it up. A well-known study tested traditional chicken soup in a controlled setting and found it significantly inhibited the migration of white blood cells called neutrophils in a concentration-dependent manner. Neutrophil movement is part of the inflammatory response that causes congestion, sore throat, and that general “inflamed” feeling during a cold. Slowing that response may help reduce upper respiratory symptoms.
What’s interesting is that the vegetables and the chicken each showed this anti-inflammatory activity on their own, and the complete soup showed no toxic effects on cells. So the combination of ingredients matters. A soup made with onions, carrots, celery, parsley, and chicken on the bone will give you the broadest benefit. Beyond the anti-inflammatory angle, hot broth loosens mucus, delivers fluids and electrolytes, and provides easily absorbed protein at a time when your appetite is low.
Ginger for Nausea
If nausea is your main problem, ginger is one of the most effective natural options. It works by blocking serotonin activity in the nerves of your digestive tract and by acting on receptors involved in the vomiting reflex. That dual mechanism is why it helps with such a wide range of nausea types, from stomach bugs to motion sickness to chemotherapy side effects.
Fresh ginger sliced into hot water makes a simple tea. You can also grate it into broth or sip flat ginger ale, though many commercial ginger ales contain very little actual ginger. Look for ginger chews or crystallized ginger if drinking is easier than eating. There’s no universally agreed-upon dose, but even small amounts can take the edge off nausea when you’re struggling to keep anything down.
Bland, Starchy Foods for an Upset Stomach
The classic BRAT diet (bananas, rice, applesauce, toast) has been a go-to recommendation for decades, and it’s still a reasonable starting point for the first day or two of a stomach illness. These foods are low in fiber, easy to digest, and unlikely to irritate an already inflamed gut. But you don’t need to limit yourself to just those four items.
Harvard Health notes that brothy soups, oatmeal, boiled potatoes, crackers, and unsweetened dry cereals are equally gentle on the stomach. Once you can tolerate bland foods without vomiting or worsening diarrhea, start adding more nutritious options: cooked squash, cooked carrots, sweet potatoes without the skin, avocado, skinless chicken or turkey, fish, and eggs. The goal is to move beyond the BRAT foods fairly quickly, since they don’t provide enough protein, fat, or micronutrients to support recovery if you stick with them for more than a couple of days.
Staying Hydrated Matters More Than Eating
Even if you can’t eat anything, fluids are non-negotiable. Vomiting, diarrhea, fever, and even heavy congestion all pull water from your body faster than normal. Small, frequent sips work better than gulping a full glass, which can trigger more nausea.
Good options include water, broth, diluted fruit juice (half water, half juice), popsicles, ice chips, and weak decaffeinated tea. If you’re dealing with significant fluid loss from vomiting or diarrhea, an oral rehydration solution like Pedialyte is a better choice than sports drinks. Sports drinks don’t have the right balance of sugar and sodium for actual dehydration. You can also make a simple rehydration drink at home: 4 cups of water, half a teaspoon of salt, and 2 tablespoons of sugar.
Honey for Coughs and Sore Throats
Honey coats and soothes an irritated throat, and it performs as well as many over-the-counter cough suppressants in studies. Half a teaspoon to one teaspoon is the typical amount recommended for cough relief. You can swallow it straight, stir it into warm water or tea, or mix it with lemon juice.
One critical safety note: never give honey to a child under age 1. Honey can contain spores that cause infant botulism, a rare but serious form of food poisoning. For older children and adults, it’s one of the simplest and most effective remedies for a nagging cough that keeps you up at night.
Probiotic Foods for Gut Recovery
After a stomach bug, the balance of bacteria in your gut takes a hit. Probiotic foods and supplements can help restore it. When used alongside proper hydration, probiotics have been shown to shorten the duration of infectious diarrhea by around 25 hours. That’s roughly a full day less of misery.
Yogurt with live active cultures is the easiest food source. Kefir, miso soup, and fermented vegetables like sauerkraut and kimchi also contain beneficial bacteria. If you’re too sick for fermented foods, a probiotic supplement is an alternative. Research suggests the benefit doesn’t vary much based on the specific strain, the number of strains, or the dose, so don’t overthink which product to grab. The strains with the most evidence behind them include Lactobacillus rhamnosus GG, Saccharomyces boulardii, and Lactobacillus reuteri. Most are available at any pharmacy.
Vitamin C and Zinc
Vitamin C won’t prevent a cold once you’re already exposed, but regular supplementation may reduce how long symptoms drag on. One large trial found that people taking vitamin C experienced roughly 30% fewer total days of disability, meaning days stuck at home or unable to work, compared to a placebo group. The benefit is modest but real, and it’s easy to get vitamin C from citrus fruits, strawberries, bell peppers, and kiwi, or from a simple supplement.
Zinc lozenges are another popular remedy. The evidence is mixed on exact dosing and timing, and researchers still haven’t pinpointed the ideal amount. The upper safe limit for adults is 40 mg per day. Zinc can cause nausea on an empty stomach, so if you’re already feeling queasy, it may not be the best choice. Food sources of zinc include meat, shellfish, pumpkin seeds, and chickpeas.
What to Avoid When You’re Sick
Some foods actively make symptoms worse. Dairy can thicken mucus for some people during a respiratory illness, though this varies individually. Greasy, fried, or heavily spiced foods are harder to digest and can worsen nausea or diarrhea. Caffeine and alcohol are both dehydrating, which is the opposite of what your body needs. Raw vegetables, high-fiber grains, and tough meats require more digestive effort than your gut can handle when it’s inflamed.
Sugary drinks like regular soda or undiluted juice can also pull water into the intestines and make diarrhea worse. If juice sounds appealing, dilute it by half with water. Stick with simple, cooked, mild foods until your appetite and digestion return to normal, then gradually reintroduce your regular diet over a few days.