Probiotics (General)
Probiotics are live microorganisms that provide health benefits, particularly for gut health, immune function, & potentially mood & metabolic health.
Evidence last reviewed: 05 Apr 2026
Probiotics are live microorganisms that can support gut health and may help with mood and metabolic issues. They are generally safe with moderate evidence backing their benefits for specific conditions.
Summarized study outcomes with population, design, grade, and effect data.
Moderate evidence suggests probiotics can help with depression, anxiety, IBS, and acute diarrhoea. However, the evidence for insulin resistance in PCOS is less robust. Overall, while beneficial for many, individual responses may vary.
depressionIndividuals with depression · Meta-analysisModerate
Probiotics yielded small but significant effects for reducing depression.
anxietyIndividuals with anxiety · Meta-analysisModerate
Probiotics showed small but significant effects for reducing anxiety.
acute infectious diarrhoeaIndividuals with acute infectious diarrhoea · Systematic reviewModerate
Probiotics may be effective in reducing the duration of acute infectious diarrhoea.
irritable bowel syndromeIndividuals with IBS · Systematic reviewModerate
Probiotics may provide benefits for managing symptoms of irritable bowel syndrome.
insulin resistanceWomen with Polycystic Ovary Syndrome (PCOS) · Systematic reviewLow
Probiotics, prebiotics, & synbiotics may help manage insulin resistance & hormonal imbalance in PCOS.
Stacks containing Probiotics (General)
Public community stacks that include this ingredient.