4. Certain Types Of Tea
Green tea has been shown to protect against some degenerative diseases, and act as an immune modulator “in immunodysfunction caused by transplanted tumors or by carcinogen treatment.”(6)
Incidentally, it has also been linked to the prevention of lung, colon, esophagus, mouth, and stomach cancers, and reduce the risk of several chronic diseases.
While black tea has a few of the same functions, it’s not quite as effective.
5. Wheat Germ
Wheat germ deprivation can have a serious impact on the immune system, one pilot study shows.
“Bioactive molecules that can gain access to body tissues through the gastrointestinal tract may interact with immune regulator circuits and effector functions,” the study authors explain(7). “Among these are plant lectins, such as wheat germ.”
When they fed rats diets either containing or deprived of wheat germ, they found that the rats who were deprived of wheat germ showed significantly less immune system response.