Evidence check: hsCRP in the context of gut health

hsCRP (high-sensitivity C-reactive protein) is a well-established systemic inflammation marker, primarily used in cardiovascular risk assessment. Its link to gut health is indirect and non-specific: impaired gut barrier function ('leaky gut') or dysbiosis can promote low-grade systemic inflammation via lipopolysaccharide translocation, potentially elevating hsCRP. Observational studies report associations between certain microbiome patterns (e.g., low diversity, high Firmicutes/Bacteroidetes ratio) and increased CRP, but randomized controlled trials demonstrating a causal effect of gut-directed interventions on hsCRP are lacking. MyBody-X offers hsCRP blood tests, but interpretation in a gut health context is limited: hsCRP is non-specific and can be elevated by infection, smoking, obesity, or other inflammatory conditions. A normal hsCRP does not rule out gut dysbiosis. Evidence grade: human-moderate (association studies) to mixed. Caveat: Not a diagnostic gut marker; clinical decisions should rely on validated methods.