Throughout our lives, our immune systems are under assault from environmental toxins. Living in crowded cities, traveling frequently in airplanes, and spending time in day care centers and schools all expose us to many more germs than people had to deal with in the past. We can help protect our normal immunity by eating right, getting enough exercise and rest, practicing stress reduction, and cultivating healthy emotional states.
There are also several herbs, such as astragalus, that are used traditionally to support immune health. Obtained from the root of Astragalus membranaceous in the pea family, astragalus has a long history in Chinese medicine in keeping people healthy under times of stress. It is safe, widely available and inexpensive.
Astragalus is one of the five supplements I recommend for a healthy immune system.