Nutritionist Explains How Diet Can Shorten Illness Duration by Up to Three Days
Feeling unwell is a common experience, with approximately 23 million Americans affected during the current cold and flu season. Viruses and other pathogens attack the immune system by targeting and destroying white blood cells, leading to illness. However, according to Cleveland Clinic nutritionist Kavitha Krishnan, incorporating specific vitamins and nutrients from delicious foods can significantly speed up the healing process.
"Poor nutrition before or during the healing process can delay your recovery," Krishnan stated. "Conversely, eating well can help the body heal faster and fight infections more effectively." This article explores dietary options for respiratory illnesses, gastrointestinal issues, and inflammatory conditions, based on expert recommendations.
Respiratory Illnesses: The Power of Zinc and Vitamins
For respiratory illnesses such as influenza and respiratory syncytial virus, the essential mineral zinc offers substantial benefits. Found in foods like oysters, cheddar cheese, and pumpkin seeds, zinc aids in producing immune system cells that combat germs responsible for the common cold. "Zinc plays a crucial role in protein and collagen synthesis, as well as tissue growth and healing," Krishnan noted.
A 2016 study conducted in Michigan found that individuals given zinc lozenges reduced the duration of their symptoms by up to three days. To boost zinc intake through food, shellfish are an excellent choice. Raw oysters contain the highest amount, with 32 milligrams in three ounces, according to Harvard Medical School. The daily recommended intake is 11 milligrams for men and around eight milligrams for women.
If raw oysters are unappealing when feeling ill, alternatives include:
- Cereal: Provides 2.8 milligrams per serving and is gentle on the stomach.
- Lentils: Half a cup, used in lentil soup, contains 1.3 milligrams of zinc.
Vitamin C-rich foods like oranges and bell peppers are also recommended for their proven ability to lessen cold severity and duration. Additionally, vitamins E and A, rich in antioxidants, strengthen the immune system by guarding against harmful inflammation that damages healthy tissue and increases infection susceptibility.
"Low levels of vitamin A result in delayed wound healing," Krishnan explained. The recommended daily amount is 900 micrograms, slightly less than what is found in a cup of cooked spinach. For vitamin E, a cup of cereal provides 14 milligrams of the 15 milligrams most adults need daily.
Vitamin D, abundant in salmon, shiitake mushrooms, and egg yolks, supports immune health. A three-ounce serving of sockeye salmon offers 400 international units of the 700 recommended for adults under 70. While it may not shorten cold duration alone, it helps prevent infections and improves overall health.
Gastrointestinal Issues: Bland and Hydrating Foods
For stomach flu, diarrhea, or vomiting from foodborne illnesses or viruses, experts advise consuming small, bland meals for one to three days. Recommended options include:
- Toast
- Plain noodles
- Crackers
- Bananas
- Rice
- Broth
- Applesauce
- Potatoes
These low-fiber starches are easily digestible and can help limit bowel movements, according to the Mayo Clinic. However, the most critical aspect of recovery is staying hydrated. Water is optimal, as it regulates body temperature and reduces dehydration risk, which can exacerbate fevers and other symptoms.
Men should aim for 15 cups of fluids daily, while women should consume 11 cups, taking small sips every few minutes to avoid nausea. "Your body needs hydration more than any specific food when fighting an illness," says family medicine specialist Dr. Neha Vyas. "Stay hydrated with water or electrolyte-rich beverages, broths, and herbal tea."
Inflammatory Conditions: Antioxidant-Rich Diets
Foods can combat harmful inflammation linked to chronic diseases, the leading cause of death in the U.S. Inflammation, the body's natural response to injuries and bacteria, becomes detrimental when prolonged, mistakenly attacking organs, tissue, and DNA. This can lead to cancer, cardiovascular disease, lung disease, and dementia.
Incorporating antioxidant-rich foods into your diet can reduce bad inflammation. Dr. Edwin McDonald of UChicago Medicine recommends a Mediterranean or plant-based diet low in red meat and processed foods, and high in nuts, olive oil, beans, fruits, vegetables, and dark chocolate.
Berries, particularly blueberries, are especially high in antioxidants. Pair them with anti-inflammatory Greek yogurt and a drizzle of honey for maximum effect. At dinner, include leafy greens like kale as a side dish or stuff colorful bell peppers, as more vibrant colors often indicate greater protective benefits.
"To make any significant difference, it's necessary to focus on long-term eating habits and an anti-inflammatory lifestyle," McDonald emphasized. By adopting these dietary strategies, individuals can not only shorten illness duration but also promote overall health and resilience against infections.
