"Relative to normal weight, both obesity (all grades) and grades 2 and 3 obesity were associated with significantly higher all-cause mortality. Grade 1 obesity overall was not associated with higher mortality, and overweight was associated with significantly lower all-cause mortality."
Overweight: BMI from 25 - 29.9.
How Much Should We Weigh for a Long and Healthy Life Span? The Need to Reconcile Caloric Restriction versus Longevity with Body Mass Index versus Mortality Data
I’m curious if there are any specific studies comparing the longevity of individuals with a BMI lower than 20 versus those with a BMI closer to 30.
[1] https://www.ox.ac.uk/news/2009-03-18-moderate-obesity-takes-...