A. Early symptoms of the illness are much like the flu. After a short time (in some cases a day or two), more severe pneumonia-like symptoms may appear. Not all individuals with Legionnaires' disease experience the same symptoms. Some may have only flu-like symptoms, but to others the disease can be fatal.
The bone broth in chicken soup contains collagen, which can help boost your immune system, in addition to amino acids and nutrients that help prevent inflammation. Chicken soup's illness-fighting ability is thought to be related to cysteine, an amino acid released from chicken during cooking.
Scientific research shows that some foods contain compounds that enhance immune system function and make humans better able to fight infection. These compounds may not prevent infections from developing, but they help activate infection-fighting white blood cells and trigger increased production of cells that kill foreign invaders.