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.
Vitamin A also increases the ability of antibodies to respond to invaders. People who eat more garlic have more natural killer white blood cells. Other helpful foods include chicken, kale, almonds, guava, crab, dark grapes and navy beans. Supplements can play a big role in boosting immune function and white blood cell counts.