Studies show that hostility tends to reduce immune system levels and loving feelings tend to increase immune system levels. The vitamin C and Zinc just mentioned above seem to do this best when the extra amounts are started as soon as possible after you realize you may be coming down with one of these. If you think you have one of these, try to see a doctor within two or three hours if you can. It may be life-saving. This is also a good idea if you are still sick more than ten days to two weeks after you first get sick.
Tuberculosis is also still around.
And bronchitis, secondary upper-respiratory infections, and pneumonia also occur occasionally. Consider temporarily taking the herbs echinacea and golden seal. The articles we've seen suggest these work best if started quickly and discontinued after two weeks at the most. This serves three important functions. In the Northern hemisphere, the flu season occurs during the winter months when heating and low temperatures often create inside air with very low absolute and relative humidity.