the lancet article is hard to just read and says it is a better predictor.

I imagine there are people who think they are ok, who are not, but I can't tell if it goes the other way.

The problem with BMI in practice is that it underdiagnoses obesity. W:H fixes that. If BMI says you're obese, you're very likely to be obese.

https://pmc.ncbi.nlm.nih.gov/articles/PMC2877506/#:~:text=BM...