Using Probiotic Food can Alleviate Symptoms in Anxiety
A team of researchers from the Shanghai Mental Health Center at Shanghai Jiao Tong University School of Medicine, reviewed 21 studies that had looked at 1,503 people collectively.
Image for representational purpose only (Photo courtesy: AFP Relaxnews/ KatarzynaBialasiewicz/Istock.com)
People suffering from anxiety can alleviate symptoms by using probiotic and non-probiotic food and supplements to regulate their gut microorganisms, suggests a review of studies published in the journal General Psychiatry.
A team of researchers from the Shanghai Mental Health Center at Shanghai Jiao Tong University School of Medicine, reviewed 21 studies that had looked at 1,503 people collectively, to investigate whether regulating intestinal microbiota could improve anxiety symptoms.
About 14 of these studies had chosen probiotics as interventions to regulate intestinal microbiota (IRIFs), while seven chose non-probiotic ways, such as adjusting daily diets.
“Overall, 11 of the 21 studies showed a positive effect on anxiety symptoms by regulating intestinal microbiota, meaning that more than half (52%) of the studies showed this approach to be effective, although some studies that had used this approach did not find it worked,” Science Daily reported.
Of the 14 studies that had used probiotics as the intervention, more than a third (36%) found them to be effective in reducing anxiety symptoms, while six of the remaining seven studies that had used non-probiotics as interventions found those to be effective — a 86% rate of effectiveness.
Some studies had used both the IRIF (interventions to regulate intestinal microbiota) approach and treatment as usual.
In the five studies that used treatment as usual and IRIF as interventions, only studies that had conducted non-probiotic ways got positive results, that showed a reduction in anxiety symptoms.
Non-probiotic interventions were also more effective in the studies that used IRIF alone. In those studies only using IRIF, 80% were effective when using non-probiotic interventions, while only 45% were found to be effective when using probiotic ways.
The authors said one reason that non-probiotic interventions were significantly more effective than probiotic interventions could be due to the fact that changing diet could have more of an impact on gut bacteria growth than introducing specific types of bacteria in a probiotic supplement.
Also, because some studies had involved introducing different types of probiotics, these could have fought against each other to work effectively, and many of the intervention times used might have been too short to significantly increase the abundance of the imported bacteria.
Researchers said the overall quality of the 21 studies included was high.
"We find that more than half of the studies included showed it was positive to treat anxiety symptoms by regulation of intestinal microbiota,” they concluded.
"There are two kinds of interventions (probiotic and non-probiotic interventions) to regulate intestinal microbiota, and it should be highlighted that the non-probiotic interventions were more effective than the probiotic interventions. More studies are needed to clarify this conclusion since we still cannot run meta-analysis so far."
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