by Cait Mizzi, CFNP
The human digestive tract is home to trillions of microorganisms. It is a complex ecosystem of
bacteria, fungi, viruses and parasites, collectively referred to as the gut microbiome. Incredibly,
these microbes possess 100 times more DNA than what is found in the rest of the human body,
making us more microbial than human!
“People have co-evolved with environmental bacteria (that have) adapted over eons to being at
home in human bodies. The present-day result is that our metabolism, our neurons and indeed
our entire physiology is an interactive cross-talk with the bacteria in our bodies” said Bruce R.
Stevens, professor of physiology and functional genomics in the College of Medicine at the
University of Florida in Gainesville.
The health of the gut microbiota is closely connected to the overall health and functionality of
the digestive tract, the immune system, endocrine system, cardiovascular system, skeletal
system, the brain and skin. Two-thirds of the body’s immune system resides in the gut.
95% of the body’s “feel-good” hormone serotonin is produced not in the brain, but in the gut.
Without a healthy gut microbiome, overall health is truly impossible.
While there isn’t one “normal” microbiome for humans, the growing body of research indicates
that specific species and patterns in colonization are beneficial and linked to better health
outcomes throughout all stages and phases of life.
Any impairment in our gut means that our overall health is compromised. To have a highly
functioning immune system, depends on the functionality of the digestive tract. To feel
excellent overall, our microbiome must be diverse and robust.
10 Factors That Disrupt the Gut Microbiome:
Proton-pump inhibitors (PPIs)
Non-steroidal anti-inflammatory drugs (Ibuprofen, Aspirin, Naproxen, etc.)
Low stomach acid
Excess alcohol consumption
Excess sugar consumption
Poor dietary habits
How Can You Tell if Your Gut Isn’t Healthy?
Bloating after meals
Heartburn or acid reflux
Frequent constipation and/or diarrhea
Any skin condition (psoriasis, eczema, acne)
Frequent colds and infections
IBS (irritable bowel syndrome)
When considering the health of our gut, there are many factors to consider. What we eat has a
very direct impact, since what we eat, our microbes also eat. Research suggests that negative
changes in the gut microbiota due to unhealthy lifestyle factors and poor nutrition contribute
to a broad spectrum of disease; diabetes, Parkinson’s, Alzheimer’s, cardiovascular disease,
severe depression and anxiety.
Supporting the health of your gut microbiome through a thoughtful and nutrient dense diet is a
great place to begin. Removing highly processed foods like industrial seed oils, refined flours,
and limiting both sugar and alcohol. While adding in gut-healing foods like bone broth,
fermented foods like sauerkraut, kimchi, natto and kefir as well as getting soluble fiber from
whole-food sources, will help to set the wheels in motion (see Top 10 Grain-Free, Low-Carb,
If you are experiencing gut related health issues that feel uncomfortable or concerning, it is
best to seek the guidance of a licensed and credentialed health practitioner for proper testing,
diagnostics and interventions.