The best foods when you’re sick depend on your symptoms, but a few stand out across the board: chicken soup, ginger, bananas, honey, and broth-based liquids. Each targets different aspects of illness, from calming nausea to replacing lost fluids to easing a sore throat. Here’s what actually works and why.
Chicken Soup for Colds and Congestion
Chicken soup isn’t just comfort food. A well-known study published in the journal CHEST found that traditional chicken soup significantly slowed the movement of white blood cells called neutrophils in lab tests. Neutrophils rush to infection sites and cause much of the inflammation behind stuffy noses, sore throats, and that heavy, congested feeling. By mildly reducing that inflammatory response, chicken soup may ease upper respiratory symptoms rather than just masking them.
Interestingly, both the chicken and every vegetable tested in the soup had some anti-inflammatory activity on their own. The benefit came from the broth itself, not from any solid particles, which means even sipping the liquid helps. The warmth of the broth also loosens mucus, and the salt and fluid content support hydration when you’re losing moisture through a runny nose or mouth breathing.
Ginger for Nausea and Vomiting
Ginger is one of the most studied natural remedies for nausea. Its active compounds work by blocking serotonin receptors in the gut, the same receptors that many prescription anti-nausea medications target. This makes ginger effective for stomach bugs, motion sickness, morning sickness, and even nausea from medical treatments.
A systematic review of clinical trials found that taking about 1 gram of ginger daily for at least three days reduced the odds of vomiting by 70% compared to a placebo. You don’t need supplements to hit that amount. A thumb-sized piece of fresh ginger steeped in hot water makes a strong tea, and even ginger chews or flat ginger ale (let the carbonation settle first) can help. Start small if your stomach is very sensitive, since too much ginger on an empty stomach can cause mild heartburn.
Bananas and Plain Starches for Upset Stomachs
You may have heard of the BRAT diet: bananas, rice, applesauce, and toast. It’s been a go-to recommendation for decades, though the CDC now considers it too restrictive on its own. Eating only BRAT foods for days can leave you short on protein, fat, and calories right when your body needs energy to recover. The better approach is to use these foods as a starting point and add other tolerable foods as soon as you can.
Bananas deserve special mention because they pull double duty. They contain pectin, a soluble fiber that helps firm up loose stools without irritating the gut. They’re also one of the richest common sources of potassium, an electrolyte you lose rapidly through vomiting and diarrhea. Ripe yellow bananas have the highest potassium content and are the easiest to digest. Plain white rice and toast work well alongside bananas because they’re low in fiber and fat, both of which can aggravate a sensitive stomach.
Fluids and Electrolytes for Dehydration
Dehydration is the biggest risk with any illness that involves vomiting, diarrhea, or fever. Water alone isn’t always enough because you’re losing sodium and potassium along with fluid. The World Health Organization’s oral rehydration formula uses a 1:1 ratio of sodium to glucose, which takes advantage of a specific transport system in the gut that pulls water in alongside both molecules. That’s why drinks with a small amount of sugar and salt rehydrate you faster than plain water.
You can buy premade electrolyte solutions at any pharmacy, or make a basic version at home with water, a pinch of salt, and a small amount of sugar or honey. Coconut water is a reasonable natural alternative since it contains potassium and some sodium, though its sodium content is lower than ideal for serious dehydration. Avoid sugary sports drinks and fruit juices, which can worsen diarrhea by pulling extra water into the intestines.
If you can’t keep liquids down, take small sips every few minutes rather than drinking a full glass at once. Ice chips and frozen fruit bars are another way to get fluid in slowly.
Honey for Coughs and Sore Throats
Honey is surprisingly effective for coughs, particularly the nighttime coughing that keeps you from sleeping. A study in The Journal of Pediatrics found that honey reduced cough frequency and severity in children better than no treatment, with a 47% reduction in cough severity compared to about 25% in the untreated group. Honey performed just as well as dextromethorphan, the active ingredient in most over-the-counter cough syrups.
A spoonful of honey coats the throat and appears to soothe the irritated nerve endings that trigger the cough reflex. Stirring it into warm water or herbal tea adds hydration on top of the cough relief. One important note: honey should never be given to children under one year old due to the risk of botulism.
Garlic for Immune Support
Garlic contains sulfur compounds that activate several parts of the immune system. Research published in Frontiers in Immunology shows that garlic stimulates natural killer cells (your body’s first responders against infected cells), boosts the production of key signaling proteins that coordinate immune defense, and enhances the ability of immune cells called macrophages to fight off invaders. Garlic also has anti-inflammatory properties, reducing the production of compounds that drive excessive inflammation.
Raw garlic delivers the most potent dose of these compounds, but cooked garlic still retains meaningful activity. Adding crushed garlic to soup, broth, or cooked vegetables is a practical way to work it in when you’re sick. Crushing or chopping garlic and letting it sit for 10 minutes before cooking helps preserve more of its beneficial compounds.
Zinc-Rich Foods to Shorten a Cold
Zinc plays a direct role in immune cell function, and getting extra zinc early in a cold can shorten how long you’re sick. One clinical trial found that zinc lozenges started within 24 hours of symptom onset cut the duration of cough roughly in half (about 3 days versus 6 days) and reduced nasal discharge by nearly 2 days. The key is starting early, since zinc appears to work by interfering with viral replication in the throat and nasal passages.
Food sources of zinc include shellfish (especially oysters), red meat, pumpkin seeds, chickpeas, and yogurt. When you’re too sick to eat much, zinc lozenges are a convenient alternative. Look for ones containing zinc acetate or zinc gluconate, and let them dissolve slowly rather than chewing them.
Probiotic Foods for Recovery
After a stomach illness, your gut bacteria take a hit. Probiotic-rich foods help restore the balance and can speed up recovery. An analysis of clinical trials found that specific probiotic strains reduced the duration of infectious diarrhea by about one day. The most effective strain, commonly found in certain yogurts, worked best at high doses taken consistently.
Plain yogurt with live active cultures is the most accessible probiotic food when you’re recovering. It’s also gentle on the stomach, provides protein, and the cool temperature can feel soothing if your throat is raw. Other probiotic sources like kefir, miso soup, and fermented vegetables are worth adding back as your appetite returns. Miso soup has the added benefit of being warm, salty, and hydrating, making it a good bridge between the acute phase of illness and normal eating.
What to Avoid When You’re Sick
Some foods actively make symptoms worse. Dairy (other than yogurt) can thicken mucus for some people during respiratory infections, though this varies from person to person. Fried and fatty foods slow digestion and can worsen nausea. Caffeine and alcohol are both dehydrating, which is the opposite of what your body needs. Highly acidic foods like tomato sauce and citrus juice can irritate a sore throat or upset stomach, even though vitamin C from whole oranges is otherwise helpful.
Spicy food is a mixed bag. Capsaicin can temporarily clear congestion, but it also irritates the stomach lining, so it’s best avoided if nausea or diarrhea is part of the picture. When in doubt, bland and warm is the safest bet until your appetite starts returning on its own.