Chicken soup won’t cure a cold, and comfort still counts until it delays care

Key takeaways

• In a 2000 lab study, a family chicken soup slowed the movement of infection-fighting white blood cells in a dish, but its authors said any benefit in sick people remained untested¹.
• The CDC says the common cold has no cure, antibiotics won’t help it, and yellow or green mucus is normal³⁴.
• Pediatricians say fever usually helps the body fight infection, and the goal of fever medicine is comfort, since it doesn’t prevent febrile seizures⁸.
• The FDA advises against cough and cold medicines for children under 2, product labels say not under 4, and the CDC now says not under 6³¹⁰.
• A fever of 100.4°F or higher in a baby younger than 3 months needs a doctor right away, and confusion or not urinating in an adult is an emergency warning sign⁹¹².

In 1993, Stephen Rennard, a lung specialist at the University of Nebraska Medical Center, brought his family’s chicken soup into his lab for an informal test². His wife, Barbara, had made it from her Lithuanian grandmother’s recipe, and she’d told him it was good for colds².

Rennard’s team tested whether the soup would slow neutrophils, white blood cells that move toward sites of infection and inflammation¹². In a lab chamber, it did, and the effect grew as the soup got stronger¹.

The team also tested 13 supermarket soups. Five worked better than Grandma’s at the same dilution, two did nothing, and one slightly sped the cells up¹. Plain tap water had no effect¹.

The study ran in the journal Chest in October 2000¹. The authors were careful. They called it a lab finding whose benefit in sick people “remains untested,” and they noted that warm liquid, extra fluids and simple comfort might explain why people feel better with soup¹².

That last idea is the point of this guide. Soup, fluids, rest and a cool cloth won’t cure a cold. But they make sick days easier, and that comfort is real care. The trouble starts only when comfort stands in for treatment someone needs.

A cold has no cure, so comfort is the plan

The CDC is blunt: nothing cures a cold, and it should clear up by itself³. Symptoms usually peak in 2 to 3 days, though a runny nose and cough can linger 10 to 14 days⁴.

That makes most cold care comfort care, including much of the pharmacy aisle. Over-the-counter (OTC) medicines relieve symptoms, but they don’t cure the illness, the CDC says³. The useful line is comfort versus treatment, an idea our article on relief and treatment explores in depth.

Antibiotics fall on the wrong side of that line for colds. They can’t kill the viruses behind a cold, so they won’t make you feel better³. They can still cause harm, including severe allergic reactions, infections with resistant germs and C. diff, a dangerous gut infection³.

Mucus color fools many people. The CDC says mucus can turn white, yellow or green during a cold, and that’s normal and doesn’t call for an antibiotic⁴.

The CDC even gives clinicians a handout called “Symptom Relief for Viral Illnesses.” It has boxes to check for a cold, flu, viral sore throat or bronchitis, a list of comfort measures, and a line for the clinician’s signature⁵. It’s a prescription for comfort, written for illnesses where comfort is the right care.

What the classic comforts can and can’t claim

Fluids. The CDC advises plenty of fluids for a cold³. Yet a 2011 Cochrane review, which pools the best available trials, found no randomized trials testing whether extra fluids help respiratory infections⁶. Some observational studies hinted that pushing fluids might even harm people with infections deep in the lungs⁶.

Dehydration, though, is a real danger, and severe cases can be life-threatening⁷. Our reading of both: keep up with the fluids an illness takes from you, and don’t force large amounts.

Honey. The CDC suggests honey for coughs in anyone at least 1 year old, and never for babies under 1³. Our honey articles cover how strong the evidence is and why infants must skip it.

Gargles, saline and moist air. The CDC lists saline sprays or drops and a clean humidifier or cool-mist vaporizer³. For children, the FDA advises cool mist rather than warm mist¹⁰. Our article on gargles and steam weighs those remedies, including the burn risk of steam bowls.

Rest and soup. The CDC recommends rest³. Soup adds warm fluid and, for many families, a sense of being cared for¹².

Comfort or remedy	What it can do	Evidence rating
Antibiotics for a cold	Nothing for the virus; can cause side effects3	Evidence says no, or unsafe
Extra fluids to shorten an infection	Untested in trials6	Not enough evidence
Chicken soup	Warm fluid; slowed white cells only in a lab dish1	Not enough evidence
Honey for cough, age 1 and up	Recommended by the CDC; see our honey articles3	Promising but early
Fever medicine to lower a child’s fever	Acetaminophen and ibuprofen both beat placebo; the AAP uses them for comfort8	Strong evidence
Fever medicine to prevent febrile seizures	No evidence it cuts repeat seizures; the AAP says it doesn’t prevent them8	Evidence says no, or unsafe
OTC cough and cold medicine under age 2	Risk of serious side effects1011	Evidence says no, or unsafe

Fever is usually the body’s helper

Many parents fear fever itself. In March 2011, the American Academy of Pediatrics (AAP) published a clinical report on fever in children in its journal, Pediatrics, that described this worry, often called “fever phobia”⁸.

The report called fever a normal body response that helps fight infection⁸. It found no proof that a fever, on its own, makes an illness worse or causes lasting brain damage⁸.

The surveys it summarized show how the fear plays out. About half of parents called a temperature below 100.4°F a fever, 85% said they’d woken a sleeping child to give fever medicine, and about half gave the wrong dose⁸.

The AAP’s conclusion reframes the whole job. The main goal of treating a feverish child is to improve comfort, not to reach a normal number⁸. Fever medicine also doesn’t prevent febrile seizures, the brief convulsions some young children have with a fever⁸.

So even acetaminophen and ibuprofen are, for most fevers, comfort measures. The AAP’s parent site says it’s a good sign when a child plays and interacts after a dose, and a reason to call when the child still acts sick after the fever comes down⁹.

Dose with care. Use the measuring device that comes with the medicine, never give children adult products, and don’t give two products with the same drug, such as acetaminophen¹⁰. If a child gets the wrong medicine or too much, call Poison Help at 1-800-222-1222¹⁴¹⁵.

The thermometer still matters in a few cases, and here the official lines differ, too. For a baby younger than 3 months, the AAP says a temperature of 100.4°F or higher means calling the pediatrician right away⁹. The CDC goes further and lists any fever before 12 weeks among its emergency warning signs¹²¹³.

The FDA’s cold advice draws its infant line at 2 months or younger¹⁰. We use the broader 3-month cutoff.

At other ages, the numbers spread out. The FDA’s cold advice says to call at 102°F or higher in a child of any age¹⁰. The AAP flags temperatures repeatedly above 104°F⁹. The CDC lists a fever above 104°F that medicine doesn’t bring down as an emergency sign with flu¹².

The spread is a hint: how a child looks and acts tells you as much as the number.

Children’s cough medicines: one shelf, three age limits

Few rules show the gap between comfort and treatment better than children’s cough and cold medicine. These products only ease symptoms, and in small children they carry real risks.

The FDA doesn’t recommend OTC cough and cold medicines for children under 2, warning of serious, even life-threatening side effects such as slowed breathing¹⁰. Reported harms have included convulsions, rapid heart rates and death¹¹.

Before the rules changed, an estimated 1,519 children under 2 were treated in U.S. emergency rooms in 2004 and 2005 for problems with these medicines, including overdoses¹¹. In January 2008, makers voluntarily pulled infant versions, and later that year they relabeled other products to say “do not use in children under 4 years of age”¹¹.

The CDC now goes further. Its cold guidance, updated in 2026, advises against OTC cough and cold medicines for any child under 6³. It also says not to give lozenges to children under 4³.

These limits don’t cancel each other out. The FDA’s under-2 advice is the floor, the under-4 line is what the box says, and the CDC’s under-6 line is the most cautious. Our suggestion: follow the CDC, and ask your child’s clinician before giving these medicines to any child under 6.

Natural labels don’t change this. The FDA says no homeopathic products are FDA-approved, urges parents not to give homeopathic cough and cold remedies to children under 4, and notes that some contained more active ingredient than their labels said¹⁰.

For young children, comfort measures are the main tools. The FDA lists fluids, saline drops, gentle suction with a bulb syringe for babies, and a cool-mist humidifier¹⁰.

Dehydration hides at both ends of life

Illness can drain a body’s water, and two groups are especially exposed. MedlinePlus, the National Library of Medicine’s consumer site, names infants and young children as higher-risk because they’re more likely to have vomiting or diarrhea⁷.

Older adults face a different trap. Thirst can fade with age, MedlinePlus notes, leaving some older people short on fluids⁷. A sick grandparent may not feel thirsty even while running low.

Signs in babies and young children include a dry mouth and tongue, crying without tears, a diaper that stays dry for 3 hours or more, unusual sleepiness, irritability and sunken eyes⁷. The CDC’s flu warning list adds no urine for 8 hours¹².

Signs in adults include strong thirst, a dry mouth, urinating less, dark urine, tiredness and dizziness⁷. Confusion, fainting, no urination, a racing heart or fast breathing call for medical help right away⁷.

When comfort becomes delay

For most healthy people with a cold, waiting it out is the right plan. The calculation changes for people at higher risk of severe illness from flu or COVID-19.

The CDC lists adults 65 and older, children younger than 2, pregnant people, and people with chronic lung disease, heart disease, diabetes, kidney disease or weak immune systems¹³. If someone in those groups has symptoms, the CDC says to contact a health care provider right away, even if the illness seems mild³.

The reason is that treatment exists. Prescription antiviral medicines can reduce severe illness, hospital stays and deaths, and they work best when taken as soon as possible¹³. A week of soup and tea can use up that window.

Two other patterns deserve attention. Not everyone with flu runs a fever, so a normal thermometer reading isn’t proof that all is well¹². And a cold that improves and then gets worse is on the CDC’s list of reasons to seek care, since a viral illness occasionally leads to a bacterial infection such as pneumonia³.

Comfort, call or go: a guide by age

This table pulls official warning signs into one place. The “comfort” column is our cautious reading of those sources, not an official rule. The table doesn’t replace your clinician’s advice, and it isn’t a complete list. For any sign that worries you, call.

Age	Comfort is enough when	Call the doctor when	Go now (911 or ER) when
Under 3 months	Stuffy nose with no fever, normal feeding and wet diapers710	Any temperature of 100.4°F or higher, right away9	Any fever, by the CDC’s list; trouble breathing, bluish lips, ribs pulling in, not alert, or a seizure1213
3 months to 2 years	Cold symptoms, drinking well, playful after fever medicine9	Fever lasting over 24 hours; fewer wet diapers; ear pain; getting worse910	Fast or labored breathing, bluish lips, no urine for 8 hours, not alert, seizure12
2 to 12 years	Cold symptoms that peak and fade; playful once fever medicine works49	Fever over 3 days; severe sore throat, ear pain or headache; stiff neck; symptoms that return or worsen39	Trouble breathing, chest pain, refusing to walk, no urine for 8 hours, seizure, fever over 104°F that medicine doesn’t lower12
Adults	Cold symptoms improving within 10 days3	Fever over 4 days; symptoms past 10 days; a chronic illness flaring3	Trouble breathing, lasting chest pain or pressure, confusion, not urinating, severe weakness12
65 and older	Mild cold symptoms, eating and drinking normally37	Any flu or COVID-19 symptoms, right away; signs of dehydration3713	Confusion, fainting, no urination, racing heart, or any adult sign above712

If someone collapses, has a seizure, has trouble breathing or can’t be woken, call 911¹⁴. Our article The symptoms that mean call 911 now covers other emergencies.

Comfort is care, and it’s one of medicine’s oldest skills

Caring for the sick with food and warmth is ancient. Rennard’s paper notes that the 12th-century physician Maimonides recommended chicken soup for breathing complaints¹.

Natural-health traditions are right to value this. A warm bowl, a quiet room and someone checking in can steady a frightened patient or parent. Our article on rituals looks at what research says about routines like these.

Comfort and treatment aren’t rivals. Comfort tends the person while the body does its work. Treatment steps in when the body needs help it can’t supply, such as an antiviral for a high-risk patient or fluids for a dehydrated child. Knowing which one a moment calls for is the real skill.

Questions readers ask

The bottom line

Comfort measures earn their place. Fluids, honey for anyone 1 or older, soup, rest and a cool-mist humidifier ease a cold that has no cure, and even fever medicine is mostly about comfort. Antibiotics don’t belong in that kit.

Comfort becomes a problem only when it delays care someone needs. Watch babies under 3 months, anyone not drinking or urinating, older adults who seem confused, and higher-risk people with flu or COVID-19 symptoms. For them, the most caring step is a phone call.

Related reading

• How to tell easing a symptom from treating a disease
• Honey “probably” eases a child’s cough, and that word is a precise rating
• Honey dressings speed burn healing, and home honey remedies need their own rules
• Plain water gargles cut colds in one trial, while steam bowls have burned children
• Rituals can steady nerves and honor a loss, but the science is young

Sources

1. Rennard BO, Ertl RF, Gossman GL, Robbins RA, Rennard SI. “Chicken Soup Inhibits Neutrophil Chemotaxis In Vitro.” Chest, 2000;118(4):1150-1157 (copy hosted by the University of Connecticut). lyneslab.uconn.edu
2. University of Nebraska Medical Center. “Mother Approved, Doctor Tested.” UNMC Today, October 17, 2000. unmc.edu
3. Centers for Disease Control and Prevention. “Manage Common Cold.” CDC, updated March 11, 2026. cdc.gov
4. Centers for Disease Control and Prevention. “Common Cold” (Be Antibiotics Aware fact sheet, CS 336866-B). CDC, undated. cdc.gov
5. Centers for Disease Control and Prevention. “Symptom Relief for Viral Illnesses” (clinician handout). CDC, undated. cdc.gov
6. Guppy MPB, Mickan SM, Del Mar CB, Thorning S, Rack A. “Advising Patients to Increase Fluid Intake for Treating Acute Respiratory Infections.” Cochrane Database of Systematic Reviews, 2011, Issue 2 (CD004419.pub3). cochranelibrary.com
7. MedlinePlus, National Library of Medicine. “Dehydration.” Updated December 29, 2023. medlineplus.gov
8. Sullivan JE, Farrar HC; American Academy of Pediatrics Section on Clinical Pharmacology and Therapeutics and Committee on Drugs. “Fever and Antipyretic Use in Children.” Pediatrics, 2011;127(3):580-587 (copy hosted by the Brazilian Society of Pediatrics). sbp.com.br
9. American Academy of Pediatrics. “Fever: When to Call the Pediatrician.” HealthyChildren.org, last updated December 2, 2022. healthychildren.org
10. U.S. Food and Drug Administration. “Should You Give Kids Medicine for Coughs and Colds?” Consumer Update, content current as of November 7, 2024. fda.gov
11. U.S. Food and Drug Administration. “Use Caution When Giving Cough and Cold Products to Kids.” Content current as of February 8, 2018. fda.gov
12. Centers for Disease Control and Prevention. “Signs and Symptoms of Flu.” CDC, August 26, 2024. cdc.gov
13. Centers for Disease Control and Prevention. “About Respiratory Illnesses.” CDC, updated September 10, 2026. cdc.gov
14. America’s Poison Centers. “Poison Help.” poisonhelp.org, accessed October 2026. poisonhelp.org
15. Cedars-Sinai. “About Poison Control Centers.” Cedars-Sinai Health Library, accessed October 2026. cedars-sinai.org