Hamer’s fourth biological law describes how microbes help heal the effects of an SBS on body organs and tissues. He applies this law through each of the three germ layers.
The endoderm and old-brain mesoderm produce fungi and TB bacteria. During the healing phase, fungi such as Candida Albicans or TB bacteria help decompose the cells that served a biological purpose during the conflict active phase.
During this decomposition process, the remnants of the microbial healing process are eliminated through the stool (colon-SBS), the urine (kidney-SBS, prostate-SBS), and the lungs, (lung-SBS). They are typically accompanied with night sweats, discharge (potentially mixed with blood), swelling, inflammation, fever, and pain. These are typically misdiagnosed as infections.
Bacteria (except for TB bacteria) support organs and tissues controlled by the new brain and cerebral cortex. During the healing phase, Hamer says that these bacteria help refill and replenish the tissue lost during the conflict active phase. These bacteria include staphylococcus and streptococcus that help rebuild bone tissue and replenish cells.
Should these bacteria be absent because of overuse of antibiotics, Hamer says that the healing will still happen, but not at the biological optimum. He also insists that microbes do not cause degenerative conditions, but rather play a beneficial role in the healing phase. He states that this makes the concept of the immune system meaningless and discounts the common premise that it is the primary defense against degenerative conditions.