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This study explores the impact of young human-derived gut microbiota on age-related cognitive and reproductive declines.

April 12, 2026NutrientsOpen Access

Young Human-Derived Microbiota Ameliorates Cognitive Decline and Reproductive Senescence in Aged Mice

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Experiments show microbiota from young donors improves cognition and fertility in aged mice, indicating a potential therapy for aging.

This study explores the impact of young human-derived gut microbiota on age-related cognitive and reproductive declines.
Transplanted gut microbiota from young human donors into aged male mice
Utilized dietary intervention with barley leaves pre-conditioning
Conducted behavioral assessments and analyzed hippocampal metabolome
Evaluated testis tissue and sperm quality to assess fertility impacts
Young fecal microbiota transplants significantly enhanced Bifidobacterium levels in aged mice
Restored cognitive behaviors and hippocampal metabolomic profiles
Protected against damage to seminiferous tubules and reduced germ cell loss
Improved sperm quality and boosted activity of the HPG axis in recipients

Zhang et al. (2026) studied this question.

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