12 Hallmarks of Aging

Deregulated nutrient-sensing

Hallmark 6 of 12 · Antagonistic tier

Pathways that detect food and energy signals (such as mTOR and AMPK) become imbalanced with age.

IIS/IGF-1, mTOR, AMPK, and sirtuin pathways coordinate growth vs maintenance. Hyperactive mTOR and dampened AMPK favor anabolism over repair, autophagy, and stress resistance—a conserved aging mechanism from worms to mammals.

How to minimize deregulated nutrient-sensing

  • Caloric restriction or time-restricted eating lowers IGF-1 and improves insulin sensitivity in human trials.
  • Exercise activates AMPK and moderates excessive mTORC1 in muscle—among the best-evidenced levers available.
  • Limit chronic hyperinsulinemia: reduce refined carbohydrates, preserve lean mass, and use post-meal activity.
  • Metformin and rapalogs are under active geroscience study—off-label longevity use is premature outside trials.