With the end of the world nigh, and a public panic about to start, this seems an ideal time to worry about weight loss and the obesity epidemic.
Coincidentally, for the first time in my life, I'm getting fat.
SlimeMoldTimeMold's 'Chemical Hunger' series
https://slimemoldtimemold.com/2021/07/07/a-chemical-hunger-part-i-mysteries/
seemed to draw a lot of interest round these parts, and even if it's not lithium
https://www.lesswrong.com/posts/7iAABhWpcGeP5e6SB/it-s-probably-not-lithium
it does seem to me that the molds raise some most interesting questions.
I find the whole 'seed oil' craziness to be a compellingly interesting argument, although, as Scott Alexander wrote:
https://slatestarcodex.com/2020/03/10/for-then-against-high-saturated-fat-diets/
it does seem to be flat wrong. But I think it's important to be interested in ideas that look like they have to be right but aren't.
I want to draw everyone's attention to the 'Experimental Fat Loss' substack
https://exfatloss.substack.com
Which seems to me the very model of sanity and empiricism, a little like reading the early Proceedings of the Royal Society, were Robert Hooke to have become interesting in losing weight.
In particular his definition of what it would mean for a diet to 'work'
https://exfatloss.substack.com/p/the-definition-of-diet-success
He does seem to have found something that works for him,
https://exfatloss.substack.com/p/losing-43lbs-in-144-days-on-ex150-diet
and I find him sufficiently trustworthy-seeming that I'm going to see if it will work for me, and if it doesn't, use his methods to play around and see if I can find something that does.
But I would welcome the comments of wiser and more sceptical persons on all these things.
Stefánsson's "The Fat of the Land" is not really worth reading for any scientific insight today, but it's entertaining early 1900s anthropology.
I don't have much of an opinion on any specific diet approach, but I can tell you my own experience with weight loss: I've always been between 15-22% bodyfat, but I have always tended to slowly gain weight if not actively dieting. My routine for about 10 years now has been to diet to 15%, and then at some point notice that I've been getting fatter and diet back down to 15% by counting calories and CICO logic. I find dieting annoying but consistent, predictable, and doable.
This routine isn't ideal, so I too am a 'victim' of the weight gain phenomenon. I can't say that I've established a truly sustainable diet for myself - but it works well enough.
I have no satisfying answers for "why are we getting fatter" or "what makes caloric deficits so hard to maintain". I appreciate the diet blogging community that tries to tackle these questions with citizen science.