Index
Reference notes on aging well — written to be accurate first and interesting second. Each entry says what a term means, what seems solid, and what is still argued about. Alphabetical, like an index should be.
- Blue Zones
The famous longevity regions: what the story claims, what the lifestyle observations are worth, and the record-keeping criticism the brand rarely mentions.
- Exercise and aging
The closest thing the field has to a consensus intervention: what regular movement reliably preserves, and why strength gets more important with each decade.
- Lifespan vs. healthspan
The two words longevity conversations mix up constantly — what each measures, why the gap between them matters, and how the field's goal has shifted.
- Sarcopenia (muscle loss with age)
The default decline of muscle and strength across decades: why it matters more than it sounds, and the two levers with real support behind them.
- Sleep and aging
How sleep changes across decades, which changes are normal versus worth attention, and why 'old people need less sleep' is a misreading.
- The boring basics
The consensus core of aging well — movement, sleep, food pattern, not smoking, social ties — and why everything exotic should be benchmarked against it.