Benefits of adolescent fitness to future cardiovascular health possibly overestimated

There is a well-known relationship between good physical fitness at a young age and a lower risk of cardiovascular disease later in life. However, when researchers adjusted for familial factors by means of sibling analysis, they found a weaker association, although the link between high body mass index (BMI) and cardiovascular disease remained strong.

https://www.sciencedaily.com/releases/2023/11/231117120643.htm