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.
2) Foods High in Vitamin E. Like vitamin C, vitamin E is a powerful antioxidant. Research suggests maintaining ample levels of vitamin E is crucial for maintaining a healthy immune system, especially among older people. To get your fill of vitamin E, look to these foods: wheat germ oil.
And they are lower in sugar than many other fruits. Mushrooms Mushrooms strengthen your immune system because they are rich in protein, fiber, vitamin C, B vitamins, calcium, and other minerals. Mushrooms make up a large part of the fabric of the earth. Apart from knowing what you should avoid, you should also be aware of certain foods that are loaded with nutrients that will support your immune system. 2  Eating a nutritious diet is more effective than taking supplements or falling victim to vaccines, which expose you to health risks far worse than the flu.