Probiotics seem to have positive effects on various mental health issues. But can their supplementation help with memory issues as well?

A recent study took a look at this question. In particular, researchers investigated whether probiotics supplementation has any influence on brain-derived neurotrophic factor (BDNF) that is involved, among other things, in communication between brain cells, responsible for learning and memory.

Based on the meta-analysis of 11 trials (with total of 648 participants), researchers concluded that taking probiotics doesn’t lead to notable changes in levels of BDNF in healthy adults.

However, probiotics turned to have benefits in people suffering from neurological disorders and depression.

Another remarkable conclusion is that the mixture of Lactobacillus and Bifidobacterium genera seems to be show better results in increasing BDNF compared to the single genus supplement.

Researchers warn that due to the low quality of the analyzed evidence, more large-scale, high-quality, randomized clinical trials are needed to confirm their conclusions.

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