Understanding the importance of gut health has led many to analyze their gut microbiome with Functional stool tests. These stool tests provide great insights into the health of your gut. Knowing if you have low levels of Bacteroidetes in the gut, is helpful information for people who are searching for answers as to why they experince bloating, gas, abdominal pain, constipation, diarrhea, mental health problems, skin problems, and the list goes on. One group of bacteria highlighted in these tests is Bacteroidetes. Low levels of Bacteroidetes on stool tests can be concerning, signaling potential health issues and imbalances in the gut ecosystem. In today’s article, I’ll explain why Bacteroidetes are important for health and some of the problems associated with low levels of Bacteroidetes. I’ll also reveiw some of the strategies to help improve Low Levels of Bacteroidetes and Bacteroides fragilis on Stool Tests.

What Are Bacteroidetes

Bacteroidetes is a phylum of Gram-negative bacteria that includes a wide variety of organisms found in the human gastrointestinal tract. Most Bacteroides species are anaerobic, meaning they thrive in environments devoid of oxygen, such as the large intestine. These bacteria are among the most prevalent in the human colon and help in the breakdown of complex carbohydrates and fibers into simpler molecules that can be absorbed by the body. A major benefit is their ability to produce short-chain fatty acids (SCFAs) like butyrate, acetate, and propionate, which are crucial for colon health.(*)

They also participate in maintaining the mucosal barrier and modulating the immune system, hence ensuring gut and overall immune health.

Why Are My Bacteroidetes Levels Low

Low levels of Bacteroidetes in a stool test can stem from various factors that reflect imbalances in the gut microbiome. Dietary habits play a significant role, with low fiber intake and diets high in fats and sugars reducing Bacteroidetes populations. (*)

The use of broad-spectrum antibiotics can also indiscriminately reduce beneficial gut bacteria, including Bacteroidetes. Chronic health conditions have also been linked to low levels of Bacteroidetes

other considerations when low levels of Bacteroidetes are identified on a stool test include stress and a sedentary lifestyle.  Something not discussed as often as it should be is the inappropriate probiotic strain  use and gastrointestinal infections can disturb the balance of the microbiome. Exposure to pesticides and antimicrobials, genetic predispositions, and chronic inflammation also play a role

Problems With Low Levels of Bacteroidetes on Stool Tests

There are several problems With Low Levels of Bacteroidetes on Stool Tests. Let’s review a few of these problems.

1. Digestive Issues and Dysbiosis

A prominent function of Bacteroidetes is aiding in the breakdown and absorption of complex carbohydrates and fibers.(*) Low levels disrupt this process, leading to digestive distress such as bloating, gas, constipation, and diarrhea. An imbalance, or dysbiosis, impairs the gut flora leading to inadequate digestion and poor nutrient absorption.

Low levels of Bacteroidetes on stool tests can indicate an imbalance in the gut microbiota, known as dysbiosis. This imbalance may lead to digestive problems including bloating, gas, constipation, and diarrhea. Dysfunctional digestion and decreasing bacterial diversity can contribute to discomfort and poor nutrient absorption, further compromising health.

2. Increased Inflammation and Immunity Issues

Another problem we see with low Levels of Bacteroidetes is gut inflammation. Bacteroidetes play a critical role in maintaining the mucosal barrier of the gut and modulating the immune system. These bacteria help maintain the integrity of the gut lining, which is essential for preventing leaky gut syndrome and keeping the intestinal barrier strong.(*)

Low levels can lead to a compromised mucosal barrier and an altered immune response, which can increase inflammation and contribute to conditions like inflammatory bowel disease (IBD), Irritable Bowel Syndrome (IBS), and other inflammatory diseases.(*)

Bacteroidetes interact with the host immune system to help modulate immune responses and maintain a balance between pro-inflammatory and anti-inflammatory states. This interaction is crucial in protecting against certain autoimmune conditions and infections.(*)

3. Metabolic Disorders

There is a growing body of evidence linking gut microbiota to metabolic health. They influence energy balance and Low levels of Bacteroidetes are associated with metabolic disorders like obesity, type 2 diabetes, insulin resistance, and coronary artery disease.(*)

Bacteroidetes are needed to break down of dietary fibers into short-chain fatty acids, which are integral to metabolic processes. The problems with having low levels is that they candisrupt energy balance and storage, leading to these types of metabolic issues. Changes in the microbiome are an overlooked area of chronic fatigue and diabetes for many people.

4. Mental Health Concerns

The gut-brain axis illustrates the intricate relationship between gut health and mental well-being.(*) Studies have shown that Bacteroides fragilis, Bacteroides vulgatus, and B. ovatus produce GABA.(*)

Low levels of Bacteroidetes can impact the production and regulation of neurotransmitters, potentially causing mood disorders including anxiety and depression (*),(*).

We know have studies that indicate that an imbalanced gut microbiome can disrupt mental health and cognitive functions and lead to anxiety and depression.(*)

5. Nutrient Malabsorption

Bacteroidetes assist with the breakdown and absorption of complex carbohydrates. Low levels can lead to malabsorption, resulting in nutrient deficiencies and related health issues like fatigue and weakness. Poor absorption of critical vitamins and minerals can impede various bodily functions and exacerbate health problems over time.

Low Levels of Bacteroides fragilis

Bacteroides fragilis, a member of the Bacteroidetes phylum, is known for its ability to modulate the immune system, promote gut barrier integrity, and produce beneficial short-chain fatty acids (SCFAs) like butyrate(*). Low levels of Bacteroides fragilis is typically discovered on a functional stool test. This bacteria is important for a number of reasons.

First, it produces something called polysaccharide A. Polysaccharide A(PSA), is a molecule that has been shown to have anti-inflammatory effects and play a role in promoting immune tolerance. A loss of immune tolerance is a known root cause for people who struggle with multiple chemical sensitivity syndrome.

Some of the problems with low levels of Bacteroides fragilis on a Stool Test also include a loss of immune tolerance. If you lose your immune tolerance in the gut, you will often struggle with multiple food allergies(IgE) and sensitivities (IgA, IgG).

Another important quality of Bacteroides fragilis lies in its ability to make Short-chain Fatty Acids (SCFAs). These SCFAs provide essential energy sources for colonocytes and help in regulating inflammatory responses as well as their role in the Gut-Brain Axis. Low levels of Bacteroides fragilis can lead to a weakened gut mucosal barrier, making the intestines more susceptible to pathogenic infections, chronic inflammation, and finally autoimmune conditions. Bacteroides species including Bacteroides fragilis is an interesting bacteria when it comes to neuroinflammatory disorders, such as MS, Parkinsons’ and Alzheimers. (*)

Ways to Improve Low Levels of Bacteroidetes and Bacteroides fragilis

1. Dietary Changes:

Diet is a significant modulator of gut microbiota composition. Consuming a diet high in fiber and prebiotics (found in fruits, vegetables, and whole grains) can promote the growth of Bacteroidetes.

Incorporating foods rich in fiber (fruits, vegetables, legumes, whole grains) into your diet can help increase Bacteroidetes levels. Also, resistant starches found in foods like bananas, potatoes, and some whole grains provide food for these beneficial bacteria.

2. Probiotics and Prebiotics:

Probiotics (fermented foods like yogurt, kefir, sauerkraut) and prebiotics support a healthy gut environment and promote Bacteroidetes growth. Prebiotics (nondigestible food ingredients fiber-rich foods, garlic, and onions that stimulate the growth of beneficial bacteria) can foster their growth

3. Reducing Antibiotic Use:

Unnecessary use of antibiotics can kill beneficial bacteria, including Bacteroidetes. Always discuss with healthcare providers to ensure antibiotics are used only when truly necessary.

4. Stress Management:

Chronic stress or more importantly high cortisol, negatively impacts gut health. Practices like meditation, yoga, and regular physical exercise can help manage stress and, in turn, promote a healthy balance of gut bacteria.

Here’s What You Should Remember About Low Levels of Bacteroidetes

Bacteroidetes are a crucial component of a healthy gut microbiome with vital roles in digestion, immune system modulation, and overall metabolic health. Maintaining a balanced diet and lifestyle can support their growth and mitigate health issues associated with low levels of these important bacteria.

The significance of a balanced gut microbiome cannot be overstated, and Bacteroidetes play a vital role in this balance. Low levels of Bacteroidetes on stool tests can lead to various health issues ranging from digestive problems to metabolic and mental health concerns. Fortunately, lifestyle and dietary adjustments can help restore these critical bacteria to their optimal levels, ensuring better overall health.

If you’ve received a stool test indicating low levels of Bacteroidetes, it’s worth consulting with Certified Functional Medicine Practitioner to develop a targeted plan that will restore balance and support your gut health. Understanding and acting on these insights is key to achieving lasting wellness.