A recent study has shown that immune stimulation has a significant effect on tumor growth in animal specimens. Safe and effective forms of immune stimulation can enhance cellular immunity, which in turn enhances the activities of T-helper cells and natural killer cells.

Beta Glucan has been shown to increase activation of macrophages, lymphocyte production, and natural killer cell activity. Several studies have indicated that Beta Glucan can also increase levels of IL-1, and TNF-alpha, both of which are instrumental in immune system coordination, and can help the body eliminate tumors more efficiently.

The use of Beta Glucan is of special interest to the cancer patient undergoing chemotherapy and/or radiation treatment. This is due to the fact that beta glucans have shown an amazing ability to accelerate recovery in irradiated animal specimens, even when it is given after the radiation dose. It can also stimulate recovery of bone marrow following chemotherapy, something vital to restriction of tumor growth and prevention of infectious complications during treatment.

Although the data provided in this study is still quite premature, and needs to be confirmed with a larger, more controlled trial, it does demonstrate the effectiveness and potential of Beta Glucan as a treatment for cancerous tumors.

Until it is proven by clinical trials, it remain as a hypothesis. If the trials show that beta glucan does not prevent cancer, then  that hypothesis is actually a myth, instead of fact.