Fortunately, a healthy body has organs that detect, process and remove toxins. The skin, lungs, liver and kidneys are the most important.

If we ingest too many toxins for a long time, those Fantastic Four can no longer handle all the work. The body then 'teaches' certain cells to absorb the poison. Especially fast-dividing cells (such as bone marrow, prostate, mammary glands) are talented students. Instead of disposing of the poison, these cells isolate it and store it internally.

A cancer cell is an energy guzzler that gives nothing back, like a parasite. We call a collection of such cells 'a tumour'. It often takes 10 to 20 years between the development of tumours and the time when they become visible on examination, but once they are visible, they can grow extremely fast.

The theory says that cancer cells are 'normal' cells, which the body transforms into poison processors. Metastases in the liver, lungs and kidneys are common because those organs process most of the poison. It's not true that a tumour 'sows' cancer cells into other organs. When doctors find metastases, it's a signal that the body developed poison-eating cancer cells in more than one organ, which will not be solved by taking away the biggest tumour.

Removing tumours by operation is, therefore, an attempt to control the symptoms; it doesn't cure the disease that causes cancer. The tumour comes back because 1) the poison itself is still there, 2) chemo and radiation add extra poison, 3) an operation reduces our poison processing capacity and 4) those three treatment terrorists commit a heavy attack on our immune system.

I will explain this simply, without medical terms.