well, "you don't think" but it'd be nice to know. the article discusses a lot of problems that may or may not linked to each other and keto might have positive

well, "you don't think" but it'd be nice to know. the article discusses a lot of problems that may or may not linked to each other and keto might have positive effects, but the "why" and "how" isn't completely proven. there's a mention of reduced insulin sensitivity, where insulin medication has the same effect as keto. this you probably wouldn't get from just eating less if the diet choice doesn't take insulin levels into account. some improvements might come from the weight loss, that often - but not necessarily - comes with keto. a big part of the ketogenic diet are leafy greens (i mean, besides meat, what else is there to eat?) which might have a huge impact on the microbial landscape in the gut, which also affects the immune system, etc. so the question isn't "keto is the cure-all so why don't you do it?" but "the ketogenic diet results in curious effects, so what part of the diet affects which issues and why" and "how do the effects of the ketogenic diet differ from (pure weight-loss effects of) other diets"?