10 Foods To Eat (and 10 Foods Avoid) When You Have The Flu

Skimming because you feel terrible? That's exactly the right move. Here's the short version, with the deeper context for each item further down.

Your single most important choice

If you take only one thing from this article, take this one: drink. Fluids do more for a flu recovery than any single food, and the CDC's flu home-care guidance puts hydration at the top of the list for a reason. A fever, the sweating that comes with it, and the dry-mouth feeling of breathing through a stuffed nose all pull water out of you faster than usual.

Plain water works for most mild flu days. When fever is high or any vomiting is in the picture, an oral rehydration solution like Pedialyte — or a diluted sports drink — adds back the sodium and potassium that pure water can't replace. The team behind Pedialyte notes that it's suitable for adults and children over one, not just little ones. Ice chips and frozen ice pops are useful tricks for anyone who feels too queasy to drink from a cup.

The folk remedy with actual science behind it

Chicken soup earned its grandmother-approved reputation honestly. A frequently cited laboratory study by pulmonologist Stephen Rennard at the University of Nebraska Medical Center found that the soup inhibited the movement of neutrophils — a class of inflammatory white blood cell — suggesting a modest anti-inflammatory effect. The researchers were careful to note that this was bench work, not a clinical trial in sick patients, but the mechanism lines up with what people have reported for generations.

You don't need to make it from scratch. The original study tested both homemade and commercial versions and most produced similar effects. A canned or carton soup, warmed with extra vegetables tossed in and a squeeze of lemon at the end, gets you most of the way there. The warm broth supports hydration. The steam temporarily loosens nasal congestion. The salt soothes a sore throat. And the whole package is gentle enough that even an unenthusiastic stomach tends to accept it.

When chicken soup isn't your thing

The active ingredients in chicken soup are mostly the broth, the warmth, the salt, and the vegetables — none of which require a chicken. Vegetable broth, miso soup, and bone broth all do similar work. As Cleveland Clinic puts it, broths and warm liquids matter most when fever has driven fluid losses up.

A 90-second version that counts: pour a carton of low-sodium broth into a mug, stir in a spoonful of miso paste, and drop in a handful of baby spinach to wilt. That's hot fluid, electrolytes, vegetables, and some protein in the time it takes to find the remote.

Steam, warmth, and a little ritual

There's a reason hot tea shows up in nearly every flu-care list. The warm liquid soothes a sore throat. The rising steam temporarily clears nasal passages. The ritual of cupping a warm mug while you do nothing else is its own quiet form of rest. Caffeine-free herbal options also sidestep the sleep and dehydration concerns that come with strong black tea or coffee.

Ginger tea pairs nicely with mild nausea. Chamomile is gentle in the evening. Peppermint can help with congestion thanks to menthol vapor. A spoon of honey and a slice of lemon stirred in adds cough relief and a small vitamin C boost. Cleveland Clinic specifically calls out ginger, chamomile, and peppermint as flu-friendly choices.

One of the most evidence-backed home remedies on this list

Most home remedies have shaky science. Honey is the exception. A Cochrane systematic review concluded that honey probably reduces cough frequency and severity in children with acute cough, with moderate-certainty evidence, and works at least as well as several common over-the-counter cough remedies. The same soothing mechanism — coating the throat, calming the cough reflex — applies to adults.

A teaspoon stirred into warm tea or taken straight off the spoon before bed is the typical dose used in the trials. It's one of the simplest, cheapest, and most reliable interventions you can keep in the cupboard.

Helpful, but not the miracle the marketing suggests

The myth that vitamin C megadoses will banish a flu is stubborn and largely wrong. According to Harvard Health's review of the evidence, routine vitamin C supplementation does not reduce the risk of catching colds in the general population, and the evidence for flu specifically is even weaker. What the evidence does support is a modest reduction in cold duration — on the order of about 8% in adults — when at least 200 milligrams a day is taken regularly before illness sets in.

The practical takeaway is calmer than the supplement aisle suggests. Whole fruits supply vitamin C alongside fluid, fiber, and a range of other antioxidants — a better package than a pill. Oranges, grapefruit, strawberries, kiwi, and cantaloupe are all easy to eat when appetite is low. If a raw throat makes straight citrus uncomfortable, berries and melon are gentler.

The unsung flu food

Spinach, kale, and chard quietly check almost every box. They supply vitamin C, vitamin A precursors, iron, and folate, all of which support normal immune function. According to Mayo Clinic Health System, the combination is exactly the kind of nutrient mix to lean on during flu season.

Cooking softens the leaves, which makes them easier on a sore throat and easier to digest. Wilt a handful of baby spinach into a bowl of broth or fold it into scrambled eggs. Kale and chard work blended into a smooth soup. None of this requires effort you don't have.

Cool, protein-rich, and gut-friendly

Yogurt is one of the kindest foods for a flu day. It's smooth on a sore throat, cool when a fever has you flushed, and supplies protein without the weight of a meat-heavy meal. The live cultures in plain yogurt — and in kefir, kimchi, and other fermented foods — are also worth a closer look. A systematic review of randomized trials found that probiotic use modestly reduced the duration of upper respiratory infections in otherwise healthy children and adults, though effect sizes were small and the strains tested varied.

Plain Greek yogurt with a drizzle of honey and a few berries is a complete, no-cook meal that nearly anyone can manage. If you notice dairy thickening your mucus or making you feel congested, kefir, lactose-free yogurt, or a non-dairy yogurt with live cultures are alternatives that keep the probiotic benefit without the discomfort.

The best evidence we have for nausea

Ginger has the strongest evidence of any common food or kitchen ingredient for easing nausea — a frequent flu companion, especially when you're taking medication on an empty stomach. A systematic review in the British Journal of Anaesthesia concluded that ginger appears effective for several types of nausea and vomiting compared with placebo, with a good safety profile at typical food and tea doses.

You don't need a supplement. Grate fresh ginger into hot water with a squeeze of lemon and a spoon of honey, or pick up a quality ginger tea. A few pieces of crystallized ginger work for short-term nausea you can carry in a pocket.

When your stomach wants something boring

When appetite has shrunk and your stomach feels uncertain, easily digested carbohydrates restore some energy without provoking nausea. Bananas in particular are soft, naturally sweet, and replace potassium that fever or any vomiting may have drained. They're the "B" in the well-known BRAT pattern — bananas, rice, applesauce, toast — which the Cleveland Clinic describes as a brief bland bridge back to normal eating during a queasy spell, not a complete diet to sit on for days.

A banana sliced over plain oatmeal with a drizzle of honey is a forgiving "I'll try to eat something" breakfast. Plain rice or buttered toast anchors lunch or dinner. As appetite returns, the goal is to step back toward a normal balanced plate within a day or two.

One of the most worth-skipping choices

Of every food and drink on the avoid list, alcohol is the one with the most consistent reasoning to set it aside. It's a diuretic, which makes the dehydration that comes with fever worse, not better. It interferes with sleep architecture, which short-changes the deep rest your immune system uses to do its work. And it places extra demand on a body that's already busy. A glass of wine or a hot toddy isn't the comfort it advertises itself as while you're sick.

If you crave something warming, hot tea with honey and lemon does what a hot toddy promises, without the cost.

They taste like comfort and behave like the opposite

A glass of cola or a sweet energy drink feels like an easy fix when nothing else appeals. The problem is that large doses of added sugar provide no rehydration benefit and tend to be inflammatory, and they crowd out the foods and fluids that would actually help. They're not a substitute for an electrolyte drink, despite the marketing.

If something sweet is what you want, a small glass of fruit juice diluted with water, herbal tea with honey, or an actual oral rehydration solution will land more gently and do more good.

A morning cup is fine; a pot in the afternoon isn't

This one is more about volume than abstention. A randomized cross-over trial in habitual coffee drinkers found that moderate caffeine intake doesn't meaningfully dehydrate people who are used to it. So a regular morning coffee is fine for most people with a mild flu.

Where caffeine starts to work against you is at higher doses, especially if you're not a habitual coffee drinker, and especially in the afternoon and evening. Caffeine interferes with the deep, restorative sleep your body leans on when sick. A second pot, an energy drink, or a pre-workout while you're trying to recover is the version that earns a spot on the avoid list.

When the only thing that sounds good is a cheeseburger

Fried and very fatty foods slow stomach emptying, which is exactly the opposite of what a queasy stomach wants. They also tend to leave you feeling worse within the hour, even when they sound appealing in the moment. If the craving is real, a small portion is unlikely to derail recovery, but leaning on greasy takeout as a main meal during a flu day usually backfires.

Easier on you: a bowl of soup, scrambled eggs on toast, a baked sweet potato with a little butter. None require much from your kitchen or your appetite.

High in sodium, low in everything else

Packaged cookies, snack cakes, chips, and similar foods are high in refined carbohydrates, added sugar, and sodium, and low in the protein, vitamins, and minerals your body is asking for. They aren't poison, and a few crackers won't undo your recovery. They just don't pull their weight when your appetite has only a few small windows of opportunity each day.

The simple swap: when something dry and salty is what sounds good, a piece of toast with a smear of nut butter or a small bowl of plain oatmeal lands in the same comfort space with more to offer.

Context matters here more than usual

Spicy food gets a more nuanced verdict than most. Capsaicin, the active compound in chilli, does briefly increase nasal mucus flow, which can temporarily thin out congestion — a phenomenon Cleveland Clinic describes as gustatory rhinitis. If your dominant symptom is a stuffed nose and your stomach feels fine, a bowl of spicy noodle soup may genuinely feel good.

If your throat is raw or your stomach is queasy, the same spice will make both worse. The decongestant benefit, when it happens, is short-lived and traded for irritation that lasts longer. The decision is symptom-led, not a blanket avoidance.

Texture is the issue

This one is almost too simple to need explaining: when your throat is already inflamed, dragging sharp edges across it makes things worse. Chips, hard crackers, dry toast crusts, granola — even healthy crunchy foods become punishing when your throat is sore.

The swap is straightforward. Smooth and soft tend to feel better: yogurt, oatmeal, applesauce, mashed banana, scrambled eggs, well-cooked rice or soft pasta. Save the textures you love for when swallowing stops feeling like an event.

Vitamin C is great; pure citrus acid on a sore throat is not

Whole oranges and grapefruit are a fine choice for vitamin C and fluid. A glass of straight citrus juice landing on an already raw throat is a different experience, and not a comfortable one. The acidity can sting and increase irritation, which makes swallowing more painful.

Diluting juice with water or switching to whole fruit, cooked leafy greens, or bell peppers gets you the same vitamin C with none of the sting.

A widespread belief that needs careful framing

The idea that milk causes more mucus is widespread, repeated by parents and pediatricians alike, and not well-supported by clinical research. Dairy does not, in the studies we have, cause your body to produce additional mucus. What it can do is change the texture and viscosity of the mucus and saliva already there, which some people genuinely experience as feeling thicker or more coating.

If that's you — if a glass of whole milk during a chesty cough leaves you reaching for tissues more often — scaling back rich whole-milk products for a couple of days is reasonable. If you don't notice the effect, there's no reason to swear off dairy. Yogurt with live cultures, as the eat list above notes, is actively useful during recovery.

Healthy in general, harder when your stomach is uncertain

Raw broccoli, cauliflower, cabbage, Brussels sprouts, and high-fiber beans are nutritional all-stars in normal circumstances. They also produce gas and digest slowly — both of which feel terrible when nausea is already in the picture. Cooked, well-chewed versions tend to be fine once your appetite returns. Raw and bulky portions during your worst day or two are the version to put aside.

A small portion of well-cooked, soft vegetables — carrots, zucchini, butternut squash — blended into a soup or simmered until tender is a gentler way to get vegetables in while you ride out the rough days.

A few common flu scenarios deserve a slightly different approach.

If you can't keep anything down. Don't push solid food. Sip clear fluids — water, oral rehydration solution, broth — in tiny, frequent amounts. A tablespoon every few minutes adds up. As nausea eases over the next 6 to 24 hours, introduce bland foods like bananas, plain rice, applesauce, or toast. The BRAT pattern is a short-term bridge, not a long-term diet — return to a balanced plate within a day or two.

If you have a high fever. Fluid losses go up sharply. Electrolyte drinks and warm broths become more important than during a milder flu. Sip more often than you think you need to, even if you're not thirsty.

If your throat is the worst part. Cool, soft, and smooth tend to feel best: yogurt, smoothies, applesauce, mashed banana, a small bowl of ice cream. Avoid acid, heat, and crunch on the worst days.

If you have no appetite at all. Don't force a meal. Focus on fluids and small, calorie-dense bites every few hours — a spoonful of peanut butter, a few crackers with a slice of cheese, a small smoothie with banana and yogurt. Eating something every few hours beats trying for a full plate and eating nothing.

Most people with the flu recover at home with rest, fluids, and time. Some don't, and the difference matters. According to the CDC, prompt medical attention is warranted for any of the following: difficulty breathing or shortness of breath, persistent chest or abdominal pain or pressure, persistent dizziness or confusion, seizures, no urine output, severe muscle pain, severe weakness or unsteadiness, fever or cough that improves then comes back worse, or worsening of any existing medical condition. The signs are different and more urgent in young children — a call to the pediatrician is the right move when in doubt.

Adults over 65, pregnant people, young children, and anyone with a chronic condition are at higher risk of flu complications. Reaching out to a clinician early — ideally within 48 hours of symptoms starting — matters more for these groups, because antiviral medications work best when started early. The food advice in this article is for the recovery in between. It isn't a substitute for the medical care that some people need.