2026-02-24
Circadian Rhythm Disruption in Aging: Mechanisms, Health Consequences, and Restoration
Circadian clocks govern virtually every physiological process — metabolism, immune function, DNA repair, and hormone secretion follow 24-hour rhythms entrained by light. With aging, the circadian system weakens: clock gene amplitude declines, light sensitivity decreases, and circadian outputs desynchronize. Strengthening circadian inputs through light exposure, meal timing, and physical activity has evidence-based effects on sleep, metabolic health, and biological aging.
2026-02-24
Sleep Architecture in Aging: Why Deep Sleep Declines and How to Partially Restore It
Slow-wave sleep (deep sleep) declines approximately 2% per decade from early adulthood, dropping from roughly 20% of total sleep in young adults to under 5% in adults over 70. This decline is not simply reduced sleep duration — it represents a fundamental change in sleep architecture with consequences for metabolic health, memory consolidation, and cellular repair.
2026-02-24
Intermittent Fasting and Aging: Metabolic Benefits, Muscle Risk, and Evidence Review
Intermittent fasting (IF) protocols — including 16:8 time-restricted eating and 5:2 alternate-day approaches — produce modest metabolic benefits similar to matched caloric restriction. Autophagy induction is mechanistically plausible but not confirmed in humans at the cellular level during typical IF windows. Muscle mass preservation requires attention to protein timing and resistance training.
2026-02-24
Nocturnal Blood Pressure Non-Dipping: The Hidden Cardiovascular Risk You Can Measure
Blood pressure normally falls 10–20% during sleep. When this nocturnal dip is absent, cardiovascular and renal risk increase substantially — even if daytime readings appear normal. This article explains the mechanism and evidence-based management strategies.
2026-02-19
Apigenin and Sleep: Evidence, Mechanisms, and Protocol
Apigenin is being studied for sleep support through GABA-related pathways, with early human data suggesting possible modest benefits and a generally favorable short-term tolerability profile.