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The Science of Comfort: Why do they tell you to eat soup when sick?

3 min read

A 2025 review published in the journal Nutrients suggested that consuming soup could reduce the severity of respiratory tract infection symptoms and potentially shorten illness duration by up to 2.5 days. Beyond being a comforting classic, the practice of eating soup when unwell is backed by multiple physiological benefits that aid in recovery.

Quick Summary

Soup provides essential hydration, electrolytes, and easy-to-digest nutrients for the body when it needs them most. Its warmth soothes a sore throat and helps clear nasal congestion, offering significant symptomatic relief during illness.

Key Points

  • Hydration: Soup's high liquid content and electrolytes are crucial for rehydrating the body, especially when fever, sweating, or vomiting increase fluid loss.

  • Nutrient Delivery: Ingredients in soups, like chicken and vegetables, provide easy-to-digest protein, vitamins, and minerals that support the immune system.

  • Symptom Relief: The warmth and steam of hot soup can help clear nasal congestion, while its soothing nature provides relief for a sore throat.

  • Anti-Inflammatory Properties: Specific ingredients such as garlic, ginger, and turmeric can help reduce inflammation, which may help shorten the duration of illness.

  • Psychological Comfort: The act of eating a warm bowl of soup can have a powerful, stress-reducing placebo effect that aids in the overall feeling of wellness.

  • Energy Boost: The carbohydrates in noodles or rice provide easily accessible energy when appetite is low and the body's resources are focused on healing.

In This Article

The Core Benefits: Hydration, Electrolytes, and Nutrition

When illness strikes, a person's appetite often diminishes, and the risk of dehydration increases due to fever, sweating, vomiting, or diarrhea. A warm bowl of soup addresses several of these problems simultaneously. Broth-based soups are an excellent source of fluids and electrolytes like sodium and potassium, which are crucial for maintaining proper body function and replenishing what is lost during sickness. The easy-to-consume liquid format is also more palatable when swallowing is difficult, or the stomach is upset.

Moreover, the ingredients in soup contribute a wide range of vital nutrients. The traditional chicken noodle soup, for instance, offers more than just comfort. The chicken provides protein, which is essential for immune system function and repairing body tissues. The vegetables, such as carrots, celery, and onions, contain vitamins A and C, along with various antioxidants that support the body's natural defenses. The carbohydrates from noodles offer an easily accessible source of energy, which is important when the body is focused on fighting off infection.

Soothing Symptoms and Reducing Inflammation

Beyond basic nutrition, soup actively helps to alleviate uncomfortable symptoms. The warmth of the broth serves as a natural decongestant, and the rising steam can help open up congested nasal passages and sinuses, making it easier to breathe. This was even confirmed in a 1978 study cited by Harvard Health, which found that hot chicken soup increased nasal mucus flow better than other liquids.

The heat and mild sodium content can also be soothing for a sore throat, providing temporary relief from irritation. Certain ingredients commonly added to soups, like garlic, ginger, and turmeric, possess anti-inflammatory and antioxidant properties that can help reduce inflammation throughout the body, further easing symptoms. The compound cysteine, an amino acid found in chicken, has also been shown to have anti-inflammatory and mucus-thinning effects.

Psychological Comfort: The Placebo Effect

For many, soup carries strong nostalgic and emotional connotations. The act of being cared for with a warm, homemade bowl of soup can have a powerful psychological effect, often referred to as the placebo effect. This feeling of comfort and security can reduce stress and make the experience of being sick feel less miserable. While not a cure, this mental boost contributes to a holistic feeling of wellness and can help motivate a faster recovery. When the immune system is under stress, any form of comfort can be a meaningful part of the healing process.

Comparison of Different Soups for Sickness

Soup Type Primary Benefits Best For Considerations
Chicken Noodle Soup Hydration, Electrolytes, Protein, Vitamins A & C, Congestion Relief Cold, Flu, Low energy Store-bought versions can be high in sodium.
Bone Broth High in Collagen, Amino Acids, Hydration, Electrolytes Digestion issues, Low appetite Rich in nutrients but may lack fiber from vegetables.
Vegetable Soup Vitamins, Minerals, Fiber, Antioxidants, Hydration Stomach flu, Gentle on digestion Can be lower in calories if protein source isn't included.
Spicy Ginger Soup Decongestant (Capsaicin), Anti-inflammatory Sinus congestion May irritate a sensitive stomach.

Making the Most of Your Sick Day Soup

When preparing soup for a sick person, consider incorporating these elements for maximum benefit:

  • Load up on veggies: Carrots, celery, spinach, and mushrooms provide essential vitamins, minerals, and antioxidants.
  • Add immune-boosting spices: Garlic, ginger, and turmeric have natural anti-inflammatory and antiviral properties.
  • Opt for lean protein: Shredded chicken or tofu provides protein to support the immune system.
  • Include complex carbohydrates: Noodles or rice offer easily digestible energy to fuel recovery.
  • Use low-sodium broth: Control the salt intake, especially in store-bought options, to avoid excessive sodium.
  • Garnish with fresh herbs: Parsley or cilantro adds extra flavor and antioxidants right before serving.

Conclusion: More Than Just a Myth

The recommendation to eat soup when sick is far more than an old wives' tale; it is a practical, science-backed home remedy. From providing vital hydration and electrolytes to delivering easy-to-digest nutrients and soothing irritating symptoms, soup offers a comprehensive approach to managing illness. The warmth provides physical comfort, while the familiar taste and preparation can also offer significant psychological reassurance. So, the next time you feel a cold or flu coming on, don't hesitate to reach for a bowl—it's one of the most effective and comforting things you can do for your body.

For more information on the benefits of chicken soup, you can refer to the MedlinePlus Medical Encyclopedia.

Frequently Asked Questions

No, soup does not cure a cold or flu, which are caused by viruses. However, it can significantly help manage symptoms and support your body's natural healing process by providing hydration, nutrients, and comfort.

While chicken noodle soup is a classic, any broth-based soup with lean protein and vegetables is beneficial. Bone broth is great for gut health, and vegetable soup offers lots of vitamins. The best choice depends on what your body can tolerate and what symptoms you have.

Canned soup is an acceptable option, but it's important to be mindful of its sodium content, as it can be very high. Look for low-sodium versions or dilute them with water to make them more beneficial.

The heat from the soup, and particularly the steam, acts as a natural decongestant. The warmth can help loosen mucus and make it easier to breathe, offering temporary relief from a stuffy nose.

Soup is easy to digest because it's a liquid meal. When you are sick, your body diverts energy to the immune system. Soup provides easily absorbed nutrition without requiring a lot of digestive effort, which is helpful when your appetite is low.

Yes, warm, liquid-based foods like soup are very soothing for an irritated throat. The warmth and mild sodium can temporarily alleviate the pain and discomfort of a sore throat.

For an added boost, consider adding garlic, ginger, or turmeric, all known for their anti-inflammatory properties. A squeeze of lemon juice can also provide extra vitamin C.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.