topicSpermidine Cognition Meta-Analysis
claim1 2 Population aging has emerged as one of the greatest global healthcare challenges of the twenty-first century, accompanied by a rapid increase in age-associated disorders, particularly cognitive impairment and neurodegenerative diseases such as Alzheimer’s disease (AD).
evidence level3
citationBhatia Muskan (2026)
sourceGut Microbiota and Brain Aging: Identifying Keystone Biomarkers for Cognitive Health
topicSpermidine Cognition Meta-Analysis
claim3 4 There is recent evidence to indicate that the gut microbiota plays an important role in healthy aging as a result of its wide-ranging interactions with host metabolism, immune function, the integrity of the intestinal barrier, and neuroendocrine signaling.
evidence level3
citationBhatia Muskan (2026)
sourceGut Microbiota and Brain Aging: Identifying Keystone Biomarkers for Cognitive Health
topicSpermidine Cognition Meta-Analysis
claimAs a result, changes in the composition and function of gut microorganisms have been connected to biological aging and cognitive resilience.
evidence level3
citationBhatia Muskan (2026)
sourceGut Microbiota and Brain Aging: Identifying Keystone Biomarkers for Cognitive Health
topicSpermidine Cognition Meta-Analysis
claimAging is characterized by a progressive decline in physiological function driven by interconnected molecular mechanisms, including cellular senescence, epigenetic alterations, oxidative stress, chronic low-grade inflammation [inflammaging], mitochondrial dysfunction, and metabolic dysregulation [,].
evidence level3
citationBhatia Muskan (2026)
sourceGut Microbiota and Brain Aging: Identifying Keystone Biomarkers for Cognitive Health
topicSpermidine Cognition Meta-Analysis
claimInterventions that alter metabolite availability or metabolism, such as caloric restriction (CR) or reduced insulin/IGF‐1 signaling (IIS), extend lifespan across species (Gao et al. ).
evidence level3
citationJiang Yizhou (2026)
sourceLifespan‐Extending Endogenous Metabolites
topicSpermidine Cognition Meta-Analysis
claimThis review highlights the role of endogenous metabolites in regulating longevity pathways and evaluates evidence across species to aid understanding metabolic regulation of aging and guiding future investigations.
evidence level3
citationJiang Yizhou (2026)
sourceLifespan‐Extending Endogenous Metabolites
topicSpermidine Cognition Meta-Analysis
claimIn UVB‐irradiated hairless mice, oral taurine preserved epidermal moisture and significantly reduced wrinkle formation, suggesting an anti‐photoaging action via its osmolyte and moisturizing roles (Yoshimura et al. ).
evidence level3
citationJiang Yizhou (2026)
sourceLifespan‐Extending Endogenous Metabolites
topicSpermidine Cognition Meta-Analysis
claim2023 2018 2021 2025 2013 Aging is a multifactorial process driven by the interplay of genetic, environmental, and metabolic perturbations, with dysregulated nutrient sensing and metabolic dysfunction recognized as core hallmarks (Lopez‐Otin et al. ).
evidence level3
citationJiang Yizhou (2026)
sourceLifespan‐Extending Endogenous Metabolites