The probiotic Lactobacillus reuteri ATCC PTA 6475 has been shown to modulate testosterone levels in mice. It is not known if these effects are seen in humans and this trial is intended to study this.~The aim of this study is to investigate if L. reuteri ATCC PTA 6475 will effect blood testosterone levels in in healthy male subjects 50-65 years of age.
This study evaluates the effect of L. reuteri ATCC PTA 6475 supplementation on testosterone in men.