What is Inflammation?
Stress-induced inflammation is the result of the immune system’s cells and their byproducts attacking pathogens or damaged cells. This process increases blood flow to the affected area, creating redness and warmth. The substances the immune system’s cells release can cause a leakage of fluid into the tissues and produce swelling.
Pain and irritation may arise from this process. Other symptoms include fever, stiffness, tiredness, headaches, chills, sweating, dizziness, low appetite, and aches and pains in different areas, like joints.
Immune cells are found all over the body. Leukocytes (a type of white blood cell) are produced in the bone marrow and lymphocytes (also a type of white blood cell) are found in the lymphatic system.
However, most of the body’s immunity actually begins in the gut. The gut contains two-thirds of immune tissue in what is called the GI tract’s immune system – the gut-associated lymphoid tissue (GALT). The GALT is mainly located in the small intestine and is composed of different kinds of immune cells.
The immune system’s response can be divided into these main fields of operation: natural and specific immunity or cellular and humoral immunity.
Natural immunity is the general defense system against pathogens. It works by producing phagocytic cells, cytokines, and killer cells. Phagocytic cells, like neutrophils and macrophages, destroy infectious pathogens. Cytokines stimulate the cells needed in the immune response to move to the affected areas (sites of infections or injuries) and help these cells communicate. Natural killer cells (a subset of white blood cells also called NK) kill infected or cancerous cells important source.
Specific immunity targets specific “jobs” or threats. It includes NKs, B cells that create antibodies to support humoral immunity, and T helper cells that create cytokines to support cellular immunity.
With regard to cellular and humoral immunity, the difference is that cellular (also called cell-mediated immunity) tags and destroys intracellular pathogens, like viruses. It doesn’t involve antibodies, but antigen-specific Th1 lymphocytes, T cytotoxic cells, and NKs.
Humoral immunity on the other hand, which is immunity that involves substances found in extracellular fluids, deals with extracellular pathogens like bacteria or parasites. It does this through Th2 cytokines that stimulate B cells into producing antibodies and antimicrobial peptides that mark extracellular pathogens for disposal.
Stress and high cortisol levels affect the immune system. They promote proinflammatory pathways, especially the activity of Th2 cytokines, creating a Th1 to Th2 shift. This shift suppresses cellular immunity in favor of humoral immunity.
With chronic stress, both Th1 and Th2 classes of cytokines can dysregulate, causing the suppression of both types of immunity and be slowing down the healing of wounds, producing less effective defenses against viral and bacterial infections, longer recovery from surgery, and a decrease in the ability to kill cancer cells.
Without an optimally functioning immune response, the risk of low-grade and persistent inflammation is increased, even though the inflammation itself is no longer able to contain infections or help injury recovery as well as it should.
The rise in proinflammatory cytokines involved in stress-induced inflammation can also trigger the development of autoimmunity. These cytokines can stimulate the immune system to attack the body’s healthy cells, mistaking them for unhealthy cells or harmful intruders. Depending on which organ or system has been damaged by the immune response, you get a specific disease picture with its own set of symptoms.
For example, if the cytokines stimulate the immune system into attacking the respiratory airways, you can develop asthma. If the immune system attacks the pancreatic cells that produce insulin, you can develop type 1 diabetes.
Stress, when chronic in nature or when it comes at a time when an individual is in a fragile state (such as during certain hormonal changes for women like pregnancy or menopause, or when there is an illness present), can also trigger the development of autoimmunity and chronic disease.
The underlying connection is, as mentioned earlier, that chronic stress induces inflammation, and inflammation is at the root of these problems.
Stress, Inflammation, and Aging
Stress also has an effect on the aging process because inflammation has an effect on aging. Aging is caused by cellular senescence, which is the irreversible cell cycle arrest that comes from changes in the length and structures of telomeres.
Telomeres are the “caps” at the end of DNA strands; they are there to protect chromosomes. When these telomeres are shortened or changed, they cannot do their jobs as well and the DNA strands are exposed to damage.
Stress-induced inflammation can accelerate cellular senescence through progressive telomeric shortening as well as oxidative stress and oncogene activation. Oncogenes are genes that, when activated, have the capacity to cause cancer.
Aging has also been linked to an increase in free radicals, hormonal decline and the decline in mitochondrial adenosine triphosphate (ATP). ATP is thought of as the energy currency of life; it is the molecule that stores the energy needed for all biological processes. Mitochondria, the organelles found in cells, synthesize this life energy by breaking down carbohydrates and fatty acids.
With free radicals, you require antioxidants to neutralize them. If your system is overloaded with free radicals, antioxidants are no longer sufficient. As the cells are exhausted and not producing enough ATP, antioxidants cannot help much. Oxidative medicine may be the better alternative as it puts energy directly into the body again. The use of natural compounds that have metabolic cardiological properties such as ribose, magnesium, CoQ10, and carnitine may be helpful to the mitochondria in optimizing ATP function.
Adrenal Fatigue and Inflammation
As you can see, the interplay between stress, inflammation, and adrenal gland function are closely tied together.
Stress-induced inflammation is a huge stressor on the body – strong enough to trigger adrenal fatigue treatment or add to its many problematic symptoms like tiredness, depression, brain fog, food sensitivities and general weakness. All systems of the body are affected.
Because the NEM’s inflammation response includes the immune system, brain, and gut, its dysregulation from chronic stress will affect all of these components as well.
When these organs and systems are overworked, you not only get problems with them directly, but the adrenal glands will become overworked as well. When the adrenal glands cannot suppress this stress-induced inflammation, the cycle continues.
Throughout the article, we have mentioned a few tests and markers for stress, which can also help you determine whether you could develop stress-induced inflammation over time. There are also some specific ways to test for inflammation directly, using symptoms as well as markers.