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.
Proteins such as meats, milk and fish also contain vitamin B12, a powerful immune booster. Minerals such as selenium and zinc work to help keep the immune system strong. These minerals are found in protein-rich foods such as pulses, nuts, meat and poultry.