When you’re sick, your body needs easy-to-digest foods that provide energy, keep you hydrated, and support your immune system without upsetting your stomach. The best choices depend on your symptoms, but a few foods consistently help across most common illnesses: broth-based soups, honey, ginger, probiotic-rich foods, and simple starches that won’t overwhelm your digestive system.
Broth and Soup Come First
Broth-based soups are the single best food when you’re sick, and not just because of tradition. Hot broth delivers fluids, sodium, and a small amount of calories in a form your body can handle even when your appetite is gone. If you add chicken and vegetables, you also get protein and micronutrients that help with recovery. The steam from hot soup loosens nasal congestion, and the salt helps your body retain the water you’re drinking.
During a fever or any illness involving vomiting or diarrhea, your fluid needs increase significantly. Women normally need about 9 cups of fluid per day, and men about 12 cups. When you’re losing fluids through sweat, vomiting, or diarrhea, you need more than that, and broth counts toward your total. Plain water is fine for mild illness, but if you’re losing fluids fast, you need a balance of electrolytes, glucose, and sodium to actually absorb the water. Oral rehydration solutions are designed for this, but sipping salty broth throughout the day works well for mild to moderate dehydration.
Honey for Coughs and Sore Throats
If your illness involves a cough, honey is worth reaching for. A study published in The Journal of Pediatrics found that honey reduced cough severity by 47% compared to a 25% reduction with no treatment, and it performed just as well as a standard over-the-counter cough suppressant. Honey coats the throat, which soothes irritation, and it has mild antimicrobial properties. A spoonful stirred into warm water or herbal tea is the simplest way to use it. Avoid giving honey to children under one year old.
Ginger for Nausea
Ginger is one of the most studied natural remedies for nausea. Clinical trials have used doses between 1,000 and 1,500 mg per day, typically divided into smaller amounts taken three or four times daily. You don’t need capsules to get this effect. A thumb-sized piece of fresh ginger sliced into hot water makes a strong tea that can settle your stomach within 15 to 30 minutes. Ginger ale from the store usually contains very little actual ginger, so fresh ginger tea or ginger chews are more reliable options.
The BRAT Diet and Beyond
The classic BRAT diet (bananas, rice, applesauce, toast) is still a reasonable starting point for the first day or two of stomach flu, food poisoning, or traveler’s diarrhea. These foods are bland, binding, and unlikely to trigger more nausea. But Harvard Health notes there’s no reason to limit yourself to just those four items. Oatmeal, boiled potatoes, crackers, and unsweetened dry cereals are equally gentle on the stomach.
Once you can keep bland food down, start adding more nutritious options: cooked squash, carrots, sweet potatoes without the skin, avocado, skinless chicken or turkey, fish, and eggs. These foods are still easy to digest but provide the protein and vitamins your body actually needs to rebuild. Staying on the BRAT diet for more than a couple of days can leave you short on nutrients at exactly the time your immune system needs them most.
Probiotic Foods May Shorten Your Illness
Your gut plays a surprisingly large role in immune function, and probiotic-rich foods can support it during illness. Multiple clinical trials have found that certain beneficial bacteria, particularly strains in the Lactobacillus family, can shorten the duration of respiratory infections. Yogurt with live active cultures, kefir, and miso soup are all good sources. If your stomach can handle them, these foods are worth including once the worst nausea has passed. Miso soup doubles as a warm, salty broth, making it especially useful when you’re congested and dehydrated.
Zinc and Vitamin C: What Actually Works
Zinc lozenges, started within the first 24 hours of cold symptoms, can meaningfully shorten how long you’re sick. One well-known trial found that zinc gluconate lozenges shortened colds by an average of 4 days, with the biggest benefits for people who would have had longer-lasting colds. The key is starting early and using lozenges (not pills you swallow) so the zinc contacts the tissue in your throat where the virus replicates.
Vitamin C is less dramatic. Your body absorbs 70% to 90% of vitamin C at doses up to 180 mg per day, but absorption drops below 50% once you exceed 1,000 mg. That means megadosing with vitamin C supplements is mostly wasted. You’re better off eating vitamin C-rich foods like bell peppers, citrus, kiwi, and strawberries in moderate amounts throughout the day. At intakes of 200 mg or more daily, your cells are essentially saturated, and higher doses produce only marginal increases in blood levels.
Foods to Avoid While Sick
Large amounts of sugar can temporarily suppress your immune function. A study found that consuming 100 grams of simple sugar from glucose, fructose, sucrose, honey, or orange juice all significantly reduced the ability of white blood cells to engulf bacteria. This effect peaked one to two hours after eating and lasted at least five hours. That doesn’t mean you need to avoid all sugar, but loading up on candy, soda, or sweetened drinks while sick is working against your immune system at the worst possible time.
Other foods to skip or minimize while you’re recovering:
- Dairy can thicken mucus for some people and worsen nausea, though yogurt with probiotics is generally an exception.
- Fried and greasy foods are hard to digest and can trigger nausea, especially with stomach bugs.
- Alcohol dehydrates you and suppresses immune function.
- Caffeine in large amounts is dehydrating. A small cup of tea is fine, but avoid relying on coffee as your main fluid source.
- Spicy food can irritate an already-inflamed throat or upset stomach, though a small amount of spice in soup can help clear congestion if your stomach tolerates it.
A Simple Sick-Day Eating Plan
In the first 12 to 24 hours when symptoms are at their worst, focus on fluids: broth, herbal tea with honey, water, and oral rehydration solutions if you’re vomiting or have diarrhea. Sip small amounts frequently rather than drinking large quantities at once.
Once your appetite begins to return, add bland starches like toast, rice, oatmeal, or crackers. Include a source of protein as soon as you can tolerate it, even if it’s just a few bites of plain chicken in your soup or a scrambled egg. As you feel better over the following days, gradually reintroduce fruits, cooked vegetables, and yogurt. Your body uses more energy fighting infection than it does at rest, so eating enough calories matters even when food doesn’t sound appealing. Small, frequent meals are easier to manage than three large ones when your stomach is still recovering.