Enterobacteriaceae is a diverse family of bacteria that includes both harmless gut residents and well-known opportunistic species such as Escherichia, Klebsiella, Enterobacter, Salmonella, and Citrobacter. In a healthy microbiome, these bacteria are present in low amounts and kept in balance by beneficial microbes.
However, Enterobacteriaceae tend to thrive in environments marked by inflammation, oxidative stress, or microbial imbalance. Many studies show that elevated levels of Enterobacteriaceae are strongly associated with inflammatory bowel diseases (IBD) such as Crohn’s disease and ulcerative colitis. In these conditions, inflammation changes the gut environment in a way that favours Enterobacteriaceae overgrowth, which can further reinforce dysbiosis and contribute to ongoing symptoms.
Even outside of IBD, increased Enterobacteriaceae may reflect digestive stress, infection, recent antibiotic use, diarrhea, or impaired gut barrier function. Low or absent levels are typically not concerning and may indicate a stable, low-inflammatory gut environment. On the Gut Zoomer panel, Enterobacteriaceae abundance provides insight into inflammation, dysbiosis patterns, and the presence of opportunistic or potentially pro-inflammatory microbes.
Enterobacteriaceae
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