“dietary L. reuteri or other probiotic supplementation may provide a viable natural approach to prevention of male hypogonadism, absent the controversy and side-effects of traditional therapies, and yield practical options for management of disorders typically associated with normal aging”
Poutahidis T, Springer A, Levkovich T, Qi P, Varian BJ, Lakritz JR, et al. (2014) Probiotic Microbes Sustain Youthful Serum Testosterone Levels and Testicular Size in Aging Mice. PLoS ONE 9(1): e84877. https://doi.org/10.1371/journal.pone.0084877