For example BMI is correlated with average expected life span, where a BMI in the “healthy” range is correlated with longer average lifespans, and both under or overweight BMIs are correlated with shorter average lifespans.
Actually, there’s a curve where all cause mortality is lowest at BMIs that are slightly overweight, between 25-30 kg/m^2 :
So the traditional “overweight” range appears to be slightly healthier overall than the “healthy” range. Perhaps because some healthy people have higher lean tissue mass (muscle, bone density, etc.).
Actually, there’s a curve where all cause mortality is lowest at BMIs that are slightly overweight, between 25-30 kg/m^2 :
https://pmc.ncbi.nlm.nih.gov/articles/PMC11051237/
So the traditional “overweight” range appears to be slightly healthier overall than the “healthy” range. Perhaps because some healthy people have higher lean tissue mass (muscle, bone density, etc.).