Lactobacillus helveticus MCC1848
Lactobacillus helveticus MCC1848 is a strain investigated primarily in relation to mood and stress resilience. The research focuses on the heat-killed (postbiotic) form of this strain rather than live bacteria, with animal model studies examining anxiety- and depression-like behaviors in stress paradigms. Two small randomized controlled trials in humans have examined heat-killed MCC1848 supplementation in relation to mood states, though these trials are early-stage and require replication in larger populations. This strain's evidence base is more focused than most, centered on the gut-brain axis, but should not be interpreted as a treatment for any mood disorder or mental health condition. These are research topics, not findings; the papers do not establish that this strain treats or prevents any condition.
Where it's been studied Tags come from a conservative keyword scan of each paper's title, abstract, and summary. A tag is research coverage, not measured effect. How we classify this →
Share of this strain's 6 body-system-tagged papers that concern each system. Research coverage, not measured effect.
Symptoms in the research A tag means the paper's text names the symptom or condition — research coverage, not evidence of benefit. How we classify this →
Share of this strain's 5 symptom-tagged papers that mention each symptom or condition. Research coverage, not evidence of benefit.
Research Study-type filters use AI-classified labels, audited but not guaranteed — check the paper itself before leaning on one. How we classify this →
6 papers reference this strain in the probiotic database.
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Citations
Selected papers that name this strain.
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[1]
PMID 42231513 →Safety evaluation of the long-term intake of heat-killed Lactobacillus helveticus MCC1848 in healthy adults: a randomized, double-blind, placebo-controlled study· BMC Nutrition · 2026
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[2]
PMID 37026368 →Heat-killed Lactobacillus helveticus improves mood states: a randomised, double-blind, placebo-controlled study· Beneficial Microbes · 2023
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[3]
PMID 37371451 →Heat-Killed L. helveticus Enhances Positive Mood States: A Randomized, Double-Blind, Placebo-Controlled Study· Brain Sciences · 2023