Topic directory
Healthspan Measures
The big-picture concepts used to frame aging well, including healthspan, lifespan, biological age, and functional capacity.
Parallel Coverage
Related Articles, Glossary, and FAQ
This branch intentionally overlaps with the editorial and reference layers so important concepts can be found from more than one angle.
Article
Healthspan vs Lifespan
Why the longevity field has shifted focus from how long you live to how well you live, and what that means in practice.
ArticleWhat Is Biological Age?
Biological age measures how old your body is functionally, not how long you have been alive. Here is how it is measured and why it matters more than your birth year.
Glossary TermHealthspan
The period of life spent in good health, with physical strength, cognitive function, mobility, and independence intact. Distinct from lifespan, which is simply the total years lived.