Is Your Gut to Blame For Anxiety and Acne
You may have recently learned that the gut is being labeled the second brain. The gut is intimately involved in a close interaction with the brain in what researchers and physicians refer to as the gut-brain axis.
However, did you also know that there is a pathway called the gut-brain-skin axis as well? The interaction between the three may be to blame for your anxiety and acne. Is the health of your gut to blame for anxiety and acne?
A Dialogue between Humans and Bacteria
How can your gut influence both your cognitive and emotional wellbeing as well as an external organ? This answer is best understood in terms of language. As humans we have co-inhabited a world surrounded by bacteria. In this article, you will discover the role of the gut-brain-skin axis in conditions such as acne and anxiety.
In fact, human intestines alone contain trillions of bacteria and outnumber the total concentration of eukaryotic cells that make up our bodies (15). It is as if we are sandwiched between colonies of bacteria that line our gastrointestinal tract and that adhere to our skin’s surface.
Overtime, beneficial and pathogenic bacteria have been so intimately involved with the human body that we have developed a bidirectional dialogue between the gut, brain, and skin. Speaking in a chemical dialogue, bacteria have learned the language of the human body and have since developed the ability to intervene into the conversation. (6)
The Importance of Human Gut Microbiota
The notion that the gastrointestinal tract can be responsible for the pathogenesis of disease and even increased rates of mortality historically dates back to 400 B.C. Hippocrates is credited with saying “death sits in the bowels” and “bad digestion is the root of all evil”.
Whether Hippocrates knew it or not, he was referencing the importance of a healthy microbiome which wasn’t until recently an interesting area of scientific or medical research until the start of the 21st century. (4)
The gut microbiota contains a range of microorganisms dependent on the lifestyle of every individual including diet, geographical location, mode of birth, antibiotic use, perceived psychological stress, and numerous other factors which regulate gut bacteria and intestinal health (3). Dependent upon these factors, the microbiota can cause severe health problems.
Living in a mutual relationship with the hundreds of different species of bacteria that can inhabit the human gut, bacteria can provide numerous health benefits (4). Some of these benefits include: (10, 11, 14, 16, 17, 20)
Understanding the Lines of Communication
Understanding the lines of communication between the gut-brain-skin axis is necessary to fully comprehend how an individual’s gut microbiota contributes to severe health complications.
The gut has been found to contain its own nervous system known as the enteric nervous system. The enteric nervous system receives and relays information through nerves with the most notable line of communication identified as the vagus nerve. The vagus nerve acts as a highway with messages being transmitted in both directions so that the gut and brain can dialogue between each other. (1, 3)
The vagus nerve originates in the brain stem and ends in the abdominal organs. Also true, one could say that the vagus nerve starts with the abdominal organs and ends in the brain given that we are discussing a bidirectional highway of transmitted information.
The presence of gut bacteria is detected by the vagus nerve and relays information to the brain. Depending on the presence of healthy or harmful bacteria, both the central nervous system and the peripheral nervous system are able to function normally or respond to a perceived threat. (1, 3)
One study involving animals represents the importance of the vagus nerve in signaling information to and from the brain. Experiencing psychological distress, symptoms entirely disappeared when the animal’s vagus nerve was severed disrupting the lines of communication (6).
Altered Gut Health Promotes Leaky Gut
Western diets high in processed foods, sugar and fats increase an individual’s risk of developing leaky gut syndrome. Bifidobacteria are bacteria which aid in the normal health and function of the gastrointestinal tract and are significantly reduced in the presence of processed sugars and fats.
Aside from decreasing the concentration of bifidobacteria, fats and sugars increase intestinal permeability. As a result, the body is susceptible to systemic inflammation, oxidative stress, insulin resistance, lowered immunity and disease. (11)
Inflammation and stress on the gastrointestinal tract aggravates leaky gut symptoms by creating pathways through those finger-like projections known as microvilli which normally help absorb nutrients.
Breaking down the physical barriers of both microvilli and the intestinal wall, bacteria become better able to pass through the gut and enter the bloodstream on route for systemic circulation. Increased intestinal permeability allows pathogens to not only move throughout the body but also to find residence in neighboring and distant organs which causes health complications. (3, 6)
Bacterial Overgrowth and Leaky Gut:
Limited concentrations of healthy bacteria in the gut can negatively impact microvilli’s function to also move particles through the gastrointestinal tract. SIBO (small intestinal bacteria overgrowth) is a condition that arises partly due to damaged microvilli resulting in bacteria being pushed from the colon to the small intestine. (3)
As bacteria builds up, the intestinal wall increases in permeability allowing bacteria to cross the gut barrier and enter the bloodstream. Bacteria overgrowth in the bloodstream can cause problems anywhere in the body including the brain and the skin.
Knowing how to speak the same language as our nervous system, bacteria, yeast and parasites can produce harmful neurochemical signals which mimic the exact same appearance as does the host’s own neurotransmitters but stimulates different responses.
One such response may be mental illness. Pathogens produce neurotransmitters which weaken the immune system by releasing inflammatory markers such as cytokines which can cause systemic inflammation. (1, 2)
Still poorly understood, the term “mind-altering bugs” originated in the 1990s when scientists were unable to identify the biological pathway by which pathogens were able to alter and cause mood changes regardless of the presence of inflammatory conditions (1).
Acne: A Sign of Weakened Immunity:
The health of your skin can be representative of how your body regulates stress and how well your immune system is functioning. Inflammation and the buildup of bacteria on the skin trigger the release of sebum from oil glands within the skin.
P. acnes (Propionibacterium acnes) is a strain of bacteria which uses the sebum as a food source. Unfortunately, these oil glands also contain receptors for hormones which further stimulate sebum production. As a result, elevated bacteria overgrowth aggravates acne problems. (6)
Catecholamines: Catecholamine are stress hormones that are released when gut microflora interact with the endocrine and nervous system of an individual impacting skin health (6).
Substance P: Substance P is a compound secreted by nerves and inflammatory cells designed to protect the immune system and it is able to interact with the gut, brain and skin (16).
Small changes in an individual’s gut microbiota have been found to cause a release of substance P in the nervous system triggering anxiety depression and anger. Substance P increases with stress and is linked to the production of excess sebum in individuals with acne complaints. (11)
Acne and Gastrointestinal Conditions
Individuals with chronic and severe acne concerns are at a higher risk of having SIBO, chronic fatigue syndrome, fibromyalgia, leaky gut syndrome as well as mood changes. One study comparing patients with acne to others with normal skin health found that the introduction of E. coli into their gut’s caused an adverse response in 65% of patients with acne problems. However, the healthier patients did not exhibit any skin sensitivity to the bacteria. (6, 11, 19)
In another report, individuals with acne and rosacea were shown to have an even greater risk of developing SIBO by up to 10 times the average health level (11).
Altered Gut Health Promotes Acne Vulgaris
Acne vulgaris is a skin condition associated with an altered psychological state and specifically, a weakened emotional response. Along with acne concerns, symptoms can include depression, anxiety, aggression and suicide (17). An altered gut microbiota can be to blame for the severity of symptoms in individuals susceptible to acne vulgaris. (11)
Emerging research of the importance of gut microbiota and its influence on the health of skin has been cause for the development of two specialized fields known as psychodermatology and neurodermatology (11). Researchers are beginning to learn that small changes to normal intestinal health can cause significant damage to the entire body and vice versa.
Bacterium Most Beneficial For Gut Health
Researchers admittedly have only begun to uncover how influential the diverse species of bacteria in our gut influence our health. Most notably, some strains of bacterium have already been spotlighted for their role in benefiting the human body.
Lactobacillus Increases GABA Production:
Several strains of Lactobacillus species have been shown to act as antidepressants and relieve symptoms of anxiety and depression. One reason for this antidepressant effect is that Lactobacillus bacteria produce an inhibitory neurotransmitter in the nervous system known as GABA.
Lactobacillus and Bifidobacterium Strains Alleviates Stress and Anxiety:
A 2005 study showed that individuals with acne and mental health symptoms such as depression had low concentrations of Lactobacillus and bifidobacteria in their gastrointestinal tract and also had increased intestinal permeability (11).
Recent studies continue to find that intervention of one’s health with supplementation of Lactobacillus and Bifidobacteria reflect a positive change in an individual’s cognitive abilities. People have reported reduced symptoms of depression, anger, and anxiety following 1 months supplementation of Lactobacillus. Physicians have also noted that these individuals have lower levels of cortisol, a stress hormone, circulating. (11, 16, 18)
Probiotics Are Critical for Brain & Skin:
The health of human cognition, behavior and emotion is dependent on the concentration and presence of specific gut friendly bacteria including probiotics. For instance, acne vulgaris is associated with nutrient deficiencies of zinc, folate, selenium, chromium and omega-3 fatty acids (17).
Prebiotics Feed Good Bacteria
P. acnes is an acne-inducing bacterium which can be prevented with an adequate concentration of probiotics. A step above the benefits of probiotics, prebiotics are comparable to fertilizer and help the colonies of beneficial bacteria grow. Konjac glucomannan hydrolysates, or GMH, is a prebiotic source which aid probiotics in inhibiting P. acnes (13).
GMH has been found to significantly increase the presence of Lactobacilli and Bifidobacteria as well as reduce colonies of harmful bacteria including E. coli. By serving as a nutrient source for friendly bacteria, GMH is associated with a decreased risk of intestinal infections, lowered pH, supports natural processes to excrete antibiotics from the body, and helps to battle pathogens from colonizing the gut. (14)
You Can Improve Your Mood & Skin
Medication Intervention: Medications affect gut health and produce common side effects such as constipation and diarrhea (9). Open up the conversation with your prescriber and discuss if pharmaceutical drugs are causing you more harm than good.
Don’t just avoid antibiotics while at the doctor’s office, stray away from antibiotics at the grocery store as well. Purchasing meat and dairy free of antibiotics will help maintain the concentration of friendly bacteria in your gut.
Supplement Your Diet with Probiotics and Prebiotics: The microbiome and activity of bacteria in the gut changes daily. Introduce healthy bacteria into your diet by taking a daily probiotic and consuming fermented foods such as saurkraut or fermented teas like kombucha.
Probiotics increase intestinal health and protect against inflammation, and increased permeability apparent in those with leaky gut syndrome. Patients battling psychological disturbances and physical concerns including dandruff and rosacea can benefit from probiotic supplementation.
The two most well understood friendly bacteria that colonize the human body are bifidobacteria and lactobacilli. These two types of microbiota produce lactic acid which protects the colon by decreasing pH. A lower pH in the colon reduces colon cancer risk by inhibiting pro-cancer enzymes. (21)
Increase Fiber: Fiber can be found in a supplement source typically containing psyllium but it is best to receive the benefits from fiber from nature. Increase the amount and variety of fruits and vegetables into your diet. Individuals consuming plant based diets have been studied to have fewer carcinogens in their microbiome than those who primarily consume meat.
Avoiding processed foods and sugar laden products which cause inflammation in the body is also key at ensuring that the fiber you receive comes from the quality of fruits and vegetables you eat.
When you sit down to your next meal, don’t just focus on your cravings and feeding your stomach. Feed your brain and nourish your skin. After all, research is continuing to prove that your body truly does represent what you eat.
You are likely hosting one or more parasites–which can enter your body through food, drink, contact with infected persons–and can live within you for years!
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