2026-02-24
Cognitive Stress Reactivity: How Stress Disrupts Mental Performance and What to Do About It
Repeated psychological stress impairs working memory, attention, and decision-making through cortisol-mediated hippocampal effects. This article reviews the mechanisms and the evidence for stress-buffering interventions including adaptogens and behavioral strategies.
2026-02-24
Exercise Recovery in Aging: Why Recovery Slows and Evidence-Based Strategies
Recovery from exercise slows significantly with age, affecting how often and how hard older adults can train. This review covers the biological reasons for prolonged recovery, its consequences for muscle preservation, and evidence-based strategies to support faster, more complete recovery.
2026-02-24
Grip Strength as a Longevity Biomarker: Evidence and Interventions
Grip strength is one of the most powerful and accessible biomarkers of biological aging, predicting cardiovascular events, hospitalization, and all-cause mortality more reliably than many clinical tests. This article covers the mechanisms, evidence, and interventions.
2026-02-24
Testosterone Decline in Men: Natural Trajectory, Functional Impact, and Evidence-Based Support
Testosterone declines approximately 1-2% per year from age 30. The clinical significance of this decline depends on absolute levels and symptoms, not chronological age alone. Testosterone replacement therapy has RCT evidence for improving muscle mass, bone density, and sexual function in men with confirmed hypogonadism. Lifestyle factors significantly modify the trajectory.
2026-02-24
Testosterone Decline in Aging Men: Natural Interventions, Monitoring, and TRT Context
Testosterone declines ~1% per year after age 30 in men. Below clinical thresholds, symptoms include fatigue, sarcopenia, and cognitive fog. Lifestyle interventions (resistance training, sleep, zinc, vitamin D) have the best evidence for supporting endogenous production. Ashwagandha and fenugreek show modest RCT data.