Willy Chertman

Mendelian randomization, bariatric surgery, & weight loss studies show decreases all cause mortality. Strongest causal evidence. Then epi associating obesity w bad things. If you use things like [heaviest BMI] u get over the [cancer causes weight loss]-->[verylowBMI-->high death]

Which can sometimes occur. Excess bodyfat is also causal for type 2 diabetes, and sustained substantial weight loss -->DM2 remission in many patients, A1C reduction in patients. Excess energy --> obesity w/hyperinsulinemia and normal sugar-->insulin resist-->Dm2 rough model

links? alsohttps://twitter.com/alexeyguzey/status/1235906106054135808 …

looked at your first link. it's a review of something related to my question, not the answer to the question, neither it is a review of papers that try to answer the questions. if you think that it cites studies that try to answer my question, please link them directly

link 2 does not seem to discuss mortality at all? this is weird link 3 does not seem to have any clinical trials at all? an RCT of bariatric surgery that would look at effect on mortality would be perfect...

(but reversal of diabetes type 2 via weight reduction is actually a good point)