according to Dr. med. Ryke Geerd Hamer

The Fifth Biological Natural Law
The law of the understanding of every so-called disease as part of a Significant Biological Special Programme (SBS®) of Nature, comprehensible in the context of our evolution.

Introduction, Brief information 1

The DHS, initially understood as a breakdown, is the decisive starting point and the crux of each SBS.
We always have to return to the DHS in diagnostics, in order to understand what the patient thought, felt and sensed at that moment. The tracks have to be taken into account as well. Once the two phases have been traversed, the cycle is concluded. Nature has seen to it that the individual can master the unusual challenge, become well, and even emerge stronger from it. Significant Biological Special Programme: the appellation indicates this already: each “illness” has a biological purpose!
To grasp the factual significance of “diseases” is, doubtless, the most wonderful gift of the GERMANISCHE. Comparable to the joy a blinded person must have when he can suddenly see again.
Earlier one used to think of a “punishment from God”, or some such, when looking for a meaning. Academic medicine did not even look for meaning. The assumption was that man is just a sack full of chemical elements, protein, fatty matter etc. , a product of chance and, therefore, “prone to error”.
Only thanks to the GERMANISCHE can we now recognise that Mother Nature always meant well with us, and has disposed everything for the best.

“Benign” or “Malignant”?
Whether a tumour will be classified as “benign” or “malignant”, depends in academic medicine on certain criteria. Aside from size, appearance and growth behaviour of the tumour, the most decisive factor is the microscopic finding (biopsy): If one finds in the microscopic examination many enlarged cells and some such with enlarged cell nuclei, as well as many mitoses (= cell divisions), then the diagnosis reads, “malignant”.
To explain: cell growth operates always the same in the body. First the cell swells up. The nucleus and the other cell components get larger and divide themselves (so-called mitosis).
The cell almost doubles its former size just before division. Now the cell constricts and divides. Instead of one cell, we end up with two cells. The “off-spring” is conspicuous before cell division through enlarged nuclei compared to the rest of its mass. 

Instead of “malignant”, it would be accurate to speak of cell proliferation, tissue-plus. The boundary in academic medicine is anything but unambiguous. Often specialists contradict each other! Namely, when tissue growth has just begun or when it has almost stopped! “Benign” and “malignant” do not exist in biology and in nature! These terms come from the Judaeo-Christian religion.
All of medicine was to be understood religiously.
Previously, we could not understand why tissue would suddenly start to grow. We know from the GERMANISCHE that tissue does not “just simply” grow at will. It is always a case of a brain-guided Significant Biological Special Programme of Nature (SBS®).

If you study the tissue of an embryo or the tissue of a presently healing wound under a microscope, you would have to classify them as “malignant”. Enlarged cells and enlarged cell nuclei indicate a lively tissue growth.

Healing callus tissue of bones outside of the periosteum, which we call osteosarcoma, only differs from callus tissue inside the periosteum in that it has emerged through a perforated periosteum (mostly due to artificial puncturing).
Such a thing happens frequently in nature as a so-called “open fracture”, if a biological conflict was involved.
Extraperiosteal osteosarcoma does nothing meaningless. Rather, since the bone is meanwhile unable to heal because the callus continues to flow out, the organism tries to stabilize the bone fracture, hold it stationary, and keep it in place with a surrounding sheath, the osteosarcoma. That we could not understand this before with our narrow-minded, religious “benign” and “malignant” concepts, in no way changes it.

Another example:
During pregnancy, the breast of a woman enlarges, at this time the cells of the milk glands increase in number. Here too, a histological finding could indicate a “malignant” breast cancer.

Exactly as with a woman who is undergoing an active worry-conflict (“malignant” breast cancer). Here also, there is growing milk gland tissue. If the worry-conflict can be solved, then the cell division stops. In this phase, the diagnosis reads, “benign” breast cancer. Then one hears, “...well, that was lucky!”

What is significant with the increase of milk-gland issue (breast cancer)?

More breast glands produce more mothers’ milk. This increase in mother’s milk is now additionally available to the child. Mother Nature wants it to become healthy again, therefore, more food is prepared. For as long as the conflict lasts, the tumour grows. The child can help itself to a “horn of plenty”, and can quickly recuperate! This ancient SBS still had its purpose amongst indigenous native populations. The breast was even given to the partner, if he was ill. That is unimaginable today, but nature is not concerned with how modern (basically unnatural), our life is today.

Copyright by Dr. med. Ryke Geerd Hamer

1 - Please note that this is only a very short version and that you will need extensive knowledge to understand the Germanische Heilkunde®. Besides understanding the system and many important details, it is especially important to study the patient cases in Dr. Hamer's books in order to understand what the GERMANISCHE (GERMANIC) is and how to live in harmony with this knowledge (= the system discovered by Dr. Hamer).