See, third rail.
I do think, generally, the opinion on this forum isn’t based on science - it’s a visceral reaction that they back up with science. Because as far as science goes, NOTHING works for weight loss in the long term.
It touches emotions in a way other stuff doesn’t. The tenor of any CICO related thread is much different than, say, the current protein thread going. Which is understandable. And even justified to an extent - culturally, we place a lot of shame and blame on people for being overweight, and since CICO is the mainstream accepted wisdom, a lot of people have been blamed for not making it work, so yeah, there’s an emotional reaction.
That said, if someone isn’t losing weight and has a reasonable weight goal, I don’t think ‘hey, maybe you’re eating too much’ is unreasonable, and I don’t think any calorie reduction is going to crash your metabolism and cause your plants to die and a plague upon your house.
Purely anecdotally, I’ve seen pretty much every diet work…sometimes. By which I mean, I do actually know people who’ve done Weight Watchers and kept the weight off for decades. And people who’ve gone vegetarian and lost weight and kept it off. And people who’ve done Atkins and kept it off.
And a lot more people who’ve done all those and regained the weight. I don’t, and again, anecdotal, know anyone who did a diet, lost weight, and regained while still on the diet. I think, especially here, we discount the habit and cultural aspects.
And the latter, especially, is relevant to keto. The diet itself isn’t hard to sustain, but we live in a carb oriented culture, and so a lot of people ‘do keto’ or ‘do low carb’ and can’t sustain it because it’s going against the cultural current.
It’d be hard to parse out how much CICO is failing because of inherent failings of the body, or because it requires you to maintain a diet that’s not how most people are wired to act. I certainly think keto is easier, because it adjusts the hormonal stuff that makes compliance harder (in addition to other disadvantages).
But, you know, I’m colored by my experiences, both personal and observational. I stopped eating carbs years ago to try and get my blood sugar under control. And I discovered that, indeed, I was perfectly capable of maintaining a 280 pound body on just meat and cheese.
I counted calories, in a rough and ready way, to drop down to, currently, 225 - 230. I’ve been losing or maintaining for going on five years now, so it seems sustainable enough. Did I tank my metabolism? It doesn’t seem like it.
That said, I for sure have observed stuff that doesn’t fit well into a simple (and I emphasize simple) CICO model, because yeah, the body is dynamic. I know, for instance, my weight gets sticky at certain points (roughly every 20 pounds or so) where it becomes difficult to lose OR gain weight. That 225 - 230 I’m at now is one of those, actually, and a whole month of a LOT of food and not my usual exercise resulted in zero weight gain.
And my inner geek likes that because I measure stuff, I can actually SEE that dynamic at work. Still, I don’t think casting an eye towards the amounts you’re eating is inherently bad, if you’re not getting the results you want.