The study reveals that aging men’s declining testosterone levels, which are linked to negative health impacts, may be counteracted by consuming probiotics. Research on male mice showed that those consuming Lactobacillus reuteri, a lactic acid bacteria from human milk, had larger testicles and higher testosterone levels than controls. Microscopic examination indicated enhanced spermatogenesis and increased Leydig cell numbers in these mice, suggesting a reversal of typical gonadal aging signs. The potential anti-inflammatory effects of L. reuteri, specifically through blocking the interleukin-17A cytokine, were also linked to improved reproductive health indicators in aged mice. These findings suggest that dietary probiotics like L. reuteri could be a natural, controversy-free solution to prevent male hypogonadism and manage age-related disorders, offering significant public health benefits.

Link to article: Probiotic Microbes Sustain Youthful Serum Testosterone Levels and Testicular Size in Aging Mice

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