Recent research suggests that certain probiotics, known for supporting gut health, may also help reduce negative feelings day-to-day.
The connection between the gut and brain, often called the gut-brain axis, has been studied for decades, showing that the trillions of microbes living in the gut can influence brain function and possibly mood.
A new study published in npj Mental Health Research explored whether taking probiotics could positively impact mood. In this study, 88 healthy adults took a daily probiotic supplement containing nine bacterial strains for four weeks, while another group took a placebo.
Participants tracked their daily mood and completed psychological tests at the beginning and end of the trial.
While standardized psychological questionnaires showed no significant mood differences between the groups, those taking probiotics reported fewer negative feelings after just two weeks. This suggests probiotics might subtly improve how people feel, even if these changes are not detected by traditional mood assessments.
Experts emphasize that while these findings are promising, more extensive research is needed to understand how probiotics influence mood and who might benefit most. The study was short and involved a small number of participants, and researchers did not analyze how the probiotics altered the gut microbiome directly.
The gut produces many chemicals critical for brain function, and signals between the gut and brain occur via nerves and immune pathways. This complex relationship hints at why gut health may affect mental well-being.
However, not all probiotics are alike. The effectiveness may depend on specific strains, doses, and individual differences. Some people may experience side effects like bloating or digestive discomfort.
For now, experts recommend focusing on overall gut health through a balanced diet rich in fiber, fruits, and vegetables, regular exercise, good sleep, and stress management as the best ways to support both gut and brain health.
Probiotic supplements could have potential benefits for mood, but more research is needed before making them a standard recommendation for mental wellness.
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