I think that obesity is very often an illness. There are times when you have someone who is obese because they are a bon viveur who simply enjoys eating and drinking too much and they get fat. However, more often than not there are complex reasons behind obesity, which in my opinion make it an illness. There are also clear-cut cases where a person has PCOS, insulin resistance, T2 diabetes or hypothyroidism where there are obviously hormonal issues contributing to the obesity.
I've been on the WLI threads since 2024 and my observation would be that people are obese or overweight for many, many, many different reasons.
I didn't have a huge appetite and still had the sensation of fullness, so that wasn't my problem. I am still not entirely sure what the cause of my over-eating and therefore fatness was, but can only attribute it to "food noise", which was something I never knew I had until I did not have it. The relentless, itchy, noisy, compulsion to eat. OMG, as soon as that stopped, I ate at mealtimes and that was that! I still felt physically hungry and I did still have an appetite, but it was all very manageable.
I came off WLI and after a while the relentless food noise came back. Again, it wasn't anything to do with sensations of fullness or having a large appetite, it was a mental compulsion to eat food. It made me feel like I was a crazy person, because I could sense it in such an acute way - whereas it had just been background noise before. So now I microdose WLI, not to lose weight, but to enjoy mental peace. No idea where that fits on the "illness" spectrum, but that is how it is for me.
Very definitely not the same for very many other former fatties who I've been posting with for over two years.