When you’re sick, your body needs more fluids, easy-to-digest calories, and specific nutrients that support your immune system. The best foods depend partly on your symptoms, but a few options help across the board: broth-based soups, honey, ginger, probiotic-rich foods, and simple starches all earn their reputation. Here’s what actually works and why.
Chicken Soup Isn’t Just Comfort Food
Chicken soup has genuine medicinal properties beyond warmth and nostalgia. A well-known study published in the journal Chest found that chicken soup significantly inhibited the movement of white blood cells called neutrophils in a concentration-dependent way. That matters because neutrophil migration is part of the inflammatory response that causes many cold symptoms, like congestion, sore throat, and general achiness. A mild anti-inflammatory effect from the soup itself can reduce the severity of upper respiratory symptoms.
The hot broth also helps with hydration, loosens mucus, and delivers electrolytes from the salt. Adding vegetables gives you vitamins, and the chicken provides protein your immune system needs to function. If you’re only going to eat one thing while sick, this is the strongest all-around choice.
Why Hydration Matters More Than Food
Fever, vomiting, diarrhea, and excessive sweating all pull fluid out of your body faster than normal. Dehydration during illness can cause electrolyte imbalances, low blood pressure, and kidney stress. Baseline recommendations call for about 15 cups of fluid daily for men and 11 for women, and illness pushes that number higher.
Plain water works, but drinks with electrolytes or hydrating powders that combine salt and sugar help your body absorb fluid more efficiently. If you’re vomiting, don’t try to drink a full glass at once. Take small sips of about an ounce every three to five minutes. This slow approach rehydrates you without overwhelming your stomach and triggering more nausea. Broth, coconut water, diluted fruit juice, and oral rehydration solutions all count toward your intake.
Honey for Coughs
Honey is one of the few home remedies with solid clinical backing for cough relief. Studies comparing honey to standard over-the-counter cough suppressants found that honey performed just as well as dextromethorphan (the active ingredient in most cough syrups) at reducing cough frequency and was significantly better than no treatment at all. In one study of 300 participants, honey reduced cough frequency and was also better than placebo for overall cough bother.
A spoonful of honey in warm water or tea coats the throat and can calm irritation. It’s a particularly good option for children over age one, since many cough medications aren’t recommended for young kids. Honey should never be given to infants under 12 months due to the risk of botulism.
Ginger for Nausea
If your illness involves nausea or vomiting, ginger is worth keeping on hand. A meta-analysis found that about 1,000 milligrams of ginger daily for at least four days was better than placebo at reducing nausea. That’s roughly a half-inch piece of fresh ginger root, or two to four capsules of ground ginger depending on the brand.
You don’t need supplements to get enough. Grate fresh ginger into hot water for tea, or add it to broth. Ginger chews and ginger ale made with real ginger (check the label) also work. The evidence is strongest for nausea associated with pregnancy and motion sickness, and it also reduced acute nausea during chemotherapy, though results for other types of stomach illness are less well-studied. For most people, it’s safe and worth trying.
Simple Starches When Your Stomach Is Upset
The classic BRAT diet (bananas, rice, applesauce, toast) remains a go-to recommendation for diarrhea and stomach upset. These foods are bland, low in fiber, and easy to digest, which means they’re less likely to irritate an already inflamed gut. Bananas also replace potassium lost through vomiting or diarrhea.
That said, you shouldn’t stick with only BRAT foods for more than a day or two. They lack the protein, fat, and variety of nutrients your body needs to recover. Once you can tolerate bland starches, start adding in simple proteins like eggs, plain yogurt, or small amounts of chicken. Oats and barley are also helpful because their soluble fiber can firm up loose stools while being gentle on digestion.
Probiotic-Rich Foods for Recovery
Your gut plays a major role in immune function, and probiotic-rich foods can give it a boost. A large meta-analysis found that probiotics reduced the risk of getting a respiratory tract infection by about 9% and cut total sick days by 23%. They also shortened the duration and reduced the severity of infections that did occur.
Yogurt with live active cultures is the most accessible source. Kefir, kimchi, sauerkraut, and miso are also good options. If dairy sounds unappealing while you’re sick, miso dissolved in hot water makes a soothing broth that delivers both probiotics and sodium. These foods are most useful as part of your regular diet to keep your immune system in shape, but continuing them during illness supports the gut bacteria that help coordinate your immune response.
Protein Helps Your Immune System Work
Your body’s immune response is protein-intensive. It requires amino acids to build antibodies, signal molecules, and new immune cells. During illness, your protein needs actually increase. Healthy but inactive adults need about 1.2 grams of protein per kilogram of body weight daily, but people dealing with significant inflammation may need up to 1.5 grams per kilogram. For a 150-pound person, that’s roughly 80 to 100 grams of protein per day.
When you have no appetite, hitting those numbers is hard. Focus on protein-dense foods that go down easy: scrambled eggs, Greek yogurt, bone broth (which contains some protein from collagen), nut butters on toast, or a simple smoothie with protein powder and frozen fruit. Even small amounts help prevent the muscle breakdown that can happen when you’re bedridden and eating very little.
Garlic and Zinc for Immune Support
Garlic contains a sulfur compound called allicin, released when you crush or chop fresh cloves. Allicin has been shown to activate several types of immune cells, including T cells, dendritic cells, and macrophages, and to increase production of key inflammatory signals that help your body fight infection. Cooking garlic reduces allicin content, so adding raw minced garlic to soup or broth just before eating preserves more of its benefit.
Zinc lozenges are another well-supported option. A systematic review of randomized controlled trials found that zinc supplementation reduced cold duration by an average of 2.25 days compared to placebo. The key is starting early, ideally within the first 24 hours of symptoms, and using lozenges rather than pills so the zinc contacts the tissues in your throat where the virus replicates.
Dairy Doesn’t Actually Increase Mucus
Many people avoid milk and dairy when they have a cold, believing it thickens mucus. According to the Mayo Clinic, this is a sensory illusion rather than a physiological reality. When milk mixes with saliva, it creates a slightly thick coating in the mouth and throat that feels like extra phlegm but isn’t. Studies in children with asthma found no difference in respiratory symptoms whether they drank dairy milk or soy milk.
This means yogurt, kefir, and other dairy products are perfectly fine to eat when you’re congested. If the mouth-coating sensation bothers you, rinsing with water afterward clears it. Avoiding dairy unnecessarily can mean missing out on protein, probiotics, and calories your body needs to recover.