Why pasteurized kefir might be better for your gut
Water Kefir and Derived Pasteurized Beverages Modulate Gut Microbiota, Intestinal Permeability and Cytokine Production In Vitro
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists tested kefir — a fermented drink — on gut bacteria in a lab. They found that even when the good bacteria in kefir were killed by heat, the drink still helped good bacteria grow and fixed a leaky gut lining.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 58 / 44
Evidence Score
A snapshot of a population at a single point in time. Can identify correlations and prevalence, but cannot determine the direction of cause and effect.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists tested kefir — a fermented drink — on gut bacteria in a lab. They found that even when the good bacteria in kefir were killed by heat, the drink still helped good bacteria grow and fixed a leaky gut lining.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 58 / 44
Evidence Score
A snapshot of a population at a single point in time. Can identify correlations and prevalence, but cannot determine the direction of cause and effect.
Publication
Authors
Calatayud M, Börner RA, Ghyselinck J, Verstrepen L, Medts J, Abbeele PVD, Boulangé CL, Priour S, Marzorati M, Damak S
Related Content
Claims (6)
When the lining of the intestines becomes less effective at blocking substances from passing into the bloodstream, it leads to higher levels of inflammatory markers in the body.
When water kefir is fermented with gut bacteria from healthy people in a lab setting, it produces more short-chain fatty acids like acetate and propionate within six hours and lowers ammonia levels.
Heating water kefir to kill its microbes may still promote the growth of beneficial Bifidobacterium bacteria in lab tests using human gut samples, possibly due to substances released by the dead microbes.
When intestinal barrier cells in a lab setting are exposed to pasteurized water kefir, their structural integrity improves, as measured by electrical resistance. This suggests that substances produced by microbes in the kefir might help maintain the barrier's function during inflammation.
Pasteurized water kefir alters the levels of two immune signaling molecules, IL-10 and IL-1β, in a laboratory model of the human intestine, suggesting it influences immune activity in a way that could support intestinal balance.