Deregulated nutrient sensing
The sensors that decide whether your body stores or repairs.
Our cells carry sophisticated sensors that detect available nutrients and adjust behavior accordingly. The main ones are the insulin/IGF-1, mTOR and AMPK pathways, plus the sirtuins. They arbitrate constantly between growth and repair.
With age and permanent food abundance these systems drift: mTOR stays switched on, AMPK goes quiet, insulin sensitivity degrades. The body never shifts into repair mode again.
What this pillar covers
Insulin and IGF-1
The most studied longevity pathway: insulin resistance, blood glucose, and why centenarians often run low IGF-1.
mTOR and AMPK
The growth/repair switch: when to flip it, and why alternating beats blocking.
Sirtuins and NAD+
The longevity enzymes, their dependence on NAD+, and what the available precursors are really worth.
Restriction and fasting
Caloric restriction, intermittent fasting, fasting-mimicking diets: the famine simulation that triggers repair.
Why it matters
This is the hinge hallmark. It directly commands autophagy, mitochondrial function and inflammation. One deregulated pathway feeds the eight other mechanisms of aging.
It is also the one most directly tied to your plate and your meal rhythm. No exotic molecule needed: meal frequency, composition and timing are enough to shift the balance.
The body cannot build and repair at the same time. Aging is often a matter of forgetting to leave it time to repair.
Where to start
Stabilize blood glucose
Protein and fiber at every meal, fewer fast sugars on their own: the foundation of insulin sensitivity.
Alternate the signals
Building periods (protein, training) and repair periods (fasting, rest) rather than one permanent regimen.
Track the right markers
Fasting glucose, insulin, HOMA-IR, HbA1c: four numbers that tell you most of what this hallmark is doing.