28 Aug 2020 --- Probi has issued clinical results demonstrating newfound potential stress-alleviation properties of its probiotic strain L. Plantarum, HEAL9. In a randomized, double blind, placebo-controlled clinical study, the trial showed significant reduction in the pro-inflammatory markers fractalkine and CD163. Maintaining or improving mental health and function is of growing interest for many people and the number of chronically stressed people is increasing dramatically, the company notes.