Have you read “The Obesity Myth”(published 2004) by Paul Campos? Am currently at page 66. I used to work in the Biometry Office of the NIH, where there was great focus on eliminating bias from clinical trials. One of my bosses was the developer of a widely used statistical measurement. Campos asserts that the WHO and NIH panels of that time consisted exclusively of doctors and psychologists who have dedicated their practice to weight loss. Independently of this book, I have read articles which use Framingham Heart Study information to show that above average weight in women over 60 has a better health and longevity advantage than being underweight.

Campos suggests that the weight loss/weight gain cycle is more damaging than being somewhat overweight.
Campos also asserts that being underweight, whether fit or not decreases healthiness and lifespan.

My guess is that the body needs to incorporate certain food elements and underweight people seem to not do this. Overweight people who do not eat a balanced diet would also fail at getting the required nutrition.

Have you already commented on this?

Thanks for casting a skeptical eye at overhyped “medical information”.
Susan