
VO2 max: The number that became a “longevity score”
Once limited to athletes and labs, the measure of maximal oxygen uptake has made its way onto smartwatches and become an indicator of health and longevity.
Science Writer

Once limited to athletes and labs, the measure of maximal oxygen uptake has made its way onto smartwatches and become an indicator of health and longevity.

CFM Resolution No. 2,454/2026 establishes that AI should support, not replace, medical decision-making. When errors occur, liability will depend on the physician’s conduct and may also involve hospitals and technology companies.

The largest study of its kind compared more than 400 physicians with AI systems and shows that the gap in clinical judgment persists, experts explain.

A 47-year Swedish study shows when physical decline begins — experts explain why its pace may be more controllable than it seems.

With more than 1,900 healthtechs, Brazil is entering a phase of maturity: money for AI no longer flows as freely as before, and the market is demanding real returns.