Cancer: A New Theory

Since the constant power of the present age is made on technology and medicine basis, the system spends significant investments on these two sectors. 
Cancer disease is not certainly more dangerous than the virus tuberculosis. And as scientists overcame on the tuberculosis, they can defeat the disease cancer. 
It is a proven fact that every day hundreds of cancer cells are created in the body and then destroyed by it. From this fact, it can be concluded that, firstly, each healthy body has the ability to destroy cancer cells by itself. Secondly, cancer cells cannot be considered as a terminal threat to body health by themselves.
Question: Why a person who does not even suffer from the "immunodeficiency" may be infected by the disease cancer? 
Every things of the body is controlled by the brain, and cancer cells are destroyed by the brain order. If the body is not suffering from the immune deficiency, there must not be any obstacle on the way of emission and implementation of safety rules of the brain i.e. hypophysis and hypothalamus. Therefore, if the brain in this case does not issue the orders of destroying the cancer cells, this theory could be proposed that the cause of cancer disease is a disorder in the brain. 
And also in respect of Islam, the new media policy on Islam that is scaring Muslims by an anti-Islam bogeyman is unacceptable. The system will try to stop this dangerous game by its arms in the US Congress and the media.