Cancer strategies that focus on boosting the immune system are very attractive. Conventional chemotherapy that destroys the immune system and leaves the person vulnerable to cancers regrowing when chemo is done. Even worse, if chemo fails to destroy cancer cells, the person is left in a worse situation because his or her immune system is severely weakened. This may accelerate the cancer growth significantly. Hence, it makes a lot of sense to focus on boosting the immune system as an alternate strategy.