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This is the radical lesson of biofeedback, which many doctors now teach their patients so that they can control pain, heart rate, blood circulation, tension and relaxation, etc.—all processes previously thought to be unconscious.
...the movement of the gut as it digests food and excretes impurities can alter your emotional state.
The entire lining of the intestines, from the esophagus through the large intestine, and including each of the seven sphincters, is lined with cells—nerve cells and other kinds of cells—that contain neuropeptides and receptors. It seems entirely possible to me that the density of receptors in the intestines may be why we feel our emotions in that part of the anatomy, often referring to them as “gut feelings.
The concept of a network, stressing the interconnectedness of all systems of the organism, has a variety of paradigm-breaking implications. In the popular lexicon, these kinds of connections between body and brain have long been referred to as “the power of the mind over the body.” But in light of my research, that phrase does not describe accurately what is happening. Mind doesn’t dominate body, it becomes body—body and mind are one. I see the process of communication we have demonstrated, the flow of information throughout the whole organism, as evidence that the body is the actual outward manifestation, in physical space, of the mind.
A network is different from a hierarchical structure that has a ruling “station” at the top and a descending series of positions that play increasingly subsidiary roles. In a network, theoretically, you can enter at any nodal point and quickly get to any other point; all locations are equal as far as the potential to “rule” or direct the flow of information.
The mind, then, is that which holds the network together, often acting below our consciousness, linking and coordinating the major systems and their organs and cells in an intelligently orchestrated symphony of life. Thus, we might refer to the whole system as a psychosomatic information network, linking psyche, which comprises all that is of an ostensibly nonmaterial nature, such as mind, emotion, and soul, to soma, which is the material world of molecules, cells, and organs. Mind and body, psyche and soma.
The three classically separated areas of neuroscience, endocrinology, and immunology, with their various organs—the brain; the glands; and the spleen, bone marrow, and lymph nodes—are actually joined to each other in a multidirectional network of communication, linked by information carriers known as neuropeptides.
In other words, the immune cells are making the same chemicals that we conceive of as controlling mood in the brain. So, immune cells not only control the tissue integrity of the body, but they also manufacture information chemicals that can regulate mood or emotion. This is yet another instance of the two-way communication between brain and body.
Neuropeptides, those chemicals secreted by the brain and known to mediate mood and behavior, were clearly signaling the cancer cells via their receptors and causing them to grow and travel, or metastasize, to different parts of the body.
The “dirt” in the lung from cigarette smoking (and presumably from other forms of pollution as well) had caused the immune system to go into hyper-response, in the form of sending in more and more macrophages to try to repair the damage, a situation that could not go on forever without some kind of mutation or “mistake” occurring in the DNA of these cells.