Editing Probiotic (section)

=== Depression and anxiety ===
A 2019 meta-analysis found low-quality evidence for probiotics having a small improvement in [[depression (mood)|depression]] and [[anxiety]].<ref>{{Cite journal |last1=Liu |first1=Richard T. |last2=Walsh |first2=Rachel F. L. |last3=Sheehan |first3=Ana E. |date=2019-07-01 |title=Prebiotics and probiotics for depression and anxiety: A systematic review and meta-analysis of controlled clinical trials |journal=Neuroscience and Biobehavioral Reviews |volume=102 |pages=13–23 |doi=10.1016/j.neubiorev.2019.03.023 |issn=1873-7528 |pmc=6584030 |pmid=31004628}}</ref> A 2020 review found probiotics might improve depression, but more studies are needed.<ref>{{Cite journal |last1=Ansari |first1=Fereshteh |last2=Pourjafar |first2=Hadi |last3=Tabrizi |first3=Aydin |last4=Homayouni |first4=Aziz |date=2020 |title=The effects of probiotics and prebiotics on mental disorders: A review on depression, anxiety, Alzheimer, and autism spectrum disorders |journal=Current Pharmaceutical Biotechnology |volume=21 |issue=7 |pages=555–565 |doi=10.2174/1389201021666200107113812 |issn=1873-4316 |pmid=31914909 |s2cid=210121155}}</ref>