The best foods to eat when you’re sick are ones that hydrate you, reduce inflammation, and give your body enough nutrients to mount an immune response without taxing your digestive system. That means broth-based soups, honey, ginger, yogurt, and simple bland foods top the list, each for different reasons depending on your symptoms.
Chicken Soup Earns Its Reputation
Chicken soup isn’t just comfort food. A well-known lab study published in the journal CHEST found that chicken soup significantly inhibited the movement of white blood cells called neutrophils, which drive the inflammatory response behind stuffy noses, sore throats, and that general “hit by a truck” feeling. The effect was concentration-dependent, meaning more soup produced a stronger anti-inflammatory result. Both the chicken and the vegetables in the soup individually showed inhibitory activity, and the complete soup showed no toxic effects on cells.
Beyond the anti-inflammatory angle, hot broth helps with hydration and can improve nasal mucus clearance, making it easier to breathe. The salt in broth also replaces sodium you lose through sweat and fever. If you’re making it at home, include the classic aromatics: onions, carrots, celery, and garlic all contributed to the anti-inflammatory effect in the study. Even store-bought versions offer hydration and easy calories when you don’t feel like eating much.
Hydration Matters More Than Food
When you’re running a fever, vomiting, or dealing with diarrhea, fluid loss is the most immediate threat. Water alone isn’t always enough because you’re also losing electrolytes. The World Health Organization’s oral rehydration formula uses a 1:1 ratio of sodium to glucose, which takes advantage of a transport system in your gut that pulls water into your bloodstream most efficiently at that ratio.
Sports drinks, sodas, and fruit juices don’t meet this standard. They contain too little sodium and too much sugar, and the excess carbohydrate can actually pull more water into your intestines and worsen diarrhea. Premixed oral rehydration solutions from the pharmacy (like Pedialyte) work well, even though their sodium-to-glucose ratio is closer to 1:3. For mild illness, alternating between water, broth, and diluted juice is usually fine. If you’re losing fluids quickly from vomiting or diarrhea, a proper rehydration solution is worth picking up.
Honey for Coughs and Sore Throats
Honey performs as well as the most common over-the-counter cough suppressant (dextromethorphan) for reducing cough frequency and severity. A systematic review and meta-analysis in BMJ Evidence-Based Medicine found no significant difference between the two for combined symptom relief, cough frequency, or cough severity. Honey actually outperformed another common cough medicine, diphenhydramine, across all three measures.
A spoonful of honey in warm water or tea coats the throat and can ease the irritation that triggers coughing. It also provides quick-digesting calories when your appetite is low. One important restriction: honey is unsafe for infants under one year old due to the risk of botulism. For everyone else, it’s a safe, accessible option that works about as well as what you’d buy at the pharmacy.
Ginger for Nausea
If your illness involves nausea or vomiting, ginger is one of the most studied natural remedies. Clinical trials have used doses equivalent to about 1 gram of fresh ginger root per day, which contains the active compounds (gingerols and shogaols) responsible for calming the stomach. You can get this from fresh ginger sliced into hot water, ginger tea, or even flat ginger ale made with real ginger (check the ingredients).
Ginger works best when you start it early and take it consistently rather than waiting until nausea peaks. Candied ginger or ginger chews are easy to keep on hand and tolerate even when nothing else sounds appealing.
Yogurt and Fermented Foods
Your gut plays a surprisingly large role in immune function, and probiotics can give it meaningful support during illness. A randomized trial of 128 children with upper respiratory infections found that those given a daily probiotic mixture had a median fever duration of 3 days compared to 5 days in the placebo group. That’s a 2-day reduction in fever, which is substantial for something with minimal side effects.
Plain yogurt with live active cultures is the easiest way to get probiotics through food. Kefir, miso soup, and kimchi are other options, though kimchi and miso may be too intense if your stomach is already upset. Stick with plain, unsweetened yogurt when you’re actively sick. The protein and calories are a bonus, and it’s cold and smooth enough to eat even with a sore throat.
Bland Foods for Stomach Illness
The classic BRAT diet (bananas, rice, applesauce, toast) has been the go-to advice for stomach bugs for decades, and it still works as a starting point. These foods are low in fiber, easy to digest, and unlikely to irritate an already inflamed stomach lining. But nutrition experts now recommend not restricting yourself to just those four foods for more than a day or two. They’re low in protein and lack many of the nutrients your body needs to recover.
Once you can keep bland foods down, expand to boiled potatoes, oatmeal, crackers, brothy soups, and unsweetened dry cereal. As your stomach settles further, add cooked squash (butternut or pumpkin), cooked carrots, sweet potatoes without skin, avocado, skinless chicken or turkey, fish, and eggs. These are all gentle on digestion but provide the protein and micronutrients that speed recovery. The goal is to move beyond BRAT as quickly as your stomach allows.
Spicy Foods for Congestion
If your main symptom is a stuffy nose, spicy foods containing capsaicin (the compound that makes chili peppers hot) can provide temporary relief. Capsaicin triggers glandular secretions in the nose through a nerve-mediated reflex, essentially forcing your nasal passages to produce thin, watery mucus that clears out thicker congestion. This is the same mechanism behind “gustatory rhinitis,” the runny nose you get from eating hot food.
Hot sauce, cayenne pepper in broth, spicy ramen, or a bowl of tom yum soup can all trigger this effect. The relief is temporary, lasting roughly 15 to 30 minutes after eating, but it can make breathing easier during meals and help you get more fluids down. Skip the spicy food if you’re also dealing with nausea, acid reflux, or stomach issues, as capsaicin will make those worse.
Zinc-Rich Foods Early in a Cold
Zinc has strong evidence for shortening the common cold when started within the first day or two of symptoms. An analysis of seven randomized trials found that zinc lozenges providing more than 75 mg of elemental zinc per day reduced cold duration by an average of 33%. That’s roughly 2 to 3 fewer days of symptoms.
While the clinical evidence is strongest for zinc lozenges (available over the counter), zinc-rich foods can contribute to your overall intake during illness. Shellfish, red meat, pumpkin seeds, chickpeas, and fortified cereals are all good sources. These won’t deliver the concentrated doses used in clinical trials, but they support immune function as part of a recovery diet. If you want the full cold-shortening effect, zinc lozenges started at the first sign of symptoms are the way to go.
What to Prioritize by Symptom
- Cold or flu with congestion: Chicken soup, spicy broth, hot tea with honey, ginger tea
- Sore throat and cough: Honey in warm water, plain yogurt, smoothies, broth
- Nausea and vomiting: Ginger tea or ginger chews, plain crackers, oral rehydration solution, small sips of clear broth
- Stomach bug or diarrhea: BRAT foods initially, then expand to boiled potatoes, cooked vegetables, lean protein, and plain yogurt
- Fever: Fluids first (water, broth, rehydration drinks), yogurt with probiotics, easy calories from toast or oatmeal
The common thread across all types of illness is hydration. Whatever else you eat, getting enough fluids with some electrolytes is the single most important dietary choice when you’re sick. Everything else builds on that foundation.