What actually adds healthy years
Longevity is a crowded word. What is left when you take out everything unproven is short, ordinary, and worth more than any of it.
01
Your arteries
The disease that kills most people builds silently for decades and is measurable in your twenties. It is also the one where knowing your numbers early changes the most.
02
Muscle and strength
Everybody loses muscle with age and almost nobody has to lose as much as they do. Strength decides whether the last decade of a life is independent.
03
Metabolic health
How well you handle sugar sits underneath heart disease, dementia and most of the rest. It is also the panel that responds best to what you do about it.
04
Sleep
Not a luxury and not a lever you can pull later. Almost every other system on this page runs worse on a body that is short of it.
05
Light
Bright mornings and dark evenings set the clock everything else runs on. It costs nothing, which is precisely why it is skipped.
Want to know where you stand?
Reading is one half. The other is a number you took yourself, and one measurement today is the start of a line you can actually follow.
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