Protecting Your Gut Microbiome: What’s Harming It (Often Without You Knowing)
- dkohlenberger
- Oct 5, 2025
- 2 min read
Yes I have become a Gut Nerd, but for a very very good reason!
Our gut is more than a digestive system—it’s a living ecosystem that shapes immunity, mood, longevity, metabolism, and even how you handle stress. Yet many common modern exposures quietly erode this delicate balance:
Antibiotics – While they save lives, they are also indiscriminate and over -prescribed, wiping out beneficial microbes along with harmful ones. Consider that by age 5 the average American child has received 18.5 rounds of antibiotic treatments.
Glyphosates – widely used herbicides that act like antibiotics in the soil and in the gut, reducing microbial diversity.
Synthetic Emulsifiers – such as polysorbate 80, carboxymethylcellulose, mono- and diglycerides, and carrageenan. These additives, common in processed foods, disturb the gut lining and promote inflammation.
Food Preservatives – like sodium benzoate or nitrates, which suppress microbial diversity.
NSAIDs – over-the-counter pain relievers (ibuprofen, naproxen) that increase intestinal permeability, contributing to “leaky gut.”
Chronic Stress – elevated cortisol alters microbial composition and weakens resilience.
Over time, these factors reduce microbial diversity and increase inflammation—two key drivers of chronic disease.
The takeaway: you can’t always control exposures, but you CAN protect your microbiome by choosing whole foods, limiting additives, incorporating fiber and fermented foods, and managing stress with intention.
Your microbiome is your inner ecosystem. Nurture it—and it will take care of you.
📖 References for further reading:
Chassaing B. et al. (2015). Dietary emulsifiers impact the mouse gut microbiota, promoting colitis and metabolic syndrome. Nature, 519:92–96.
Blaser MJ. (2016). Antibiotic use and its consequences for the normal microbiome. Science, 352(6285):544–545.
by GA Levine · 2022 · Cited by 18 — In their first 5 years, we estimate children received 18.5 antibiotic treatments on average (interquartile range [IQR], 11.6-24.6) in LMICs. https://pubmed.ncbi.nlm.nih.gov/35325088/
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