I was die hard keto for 4 years, but having such low carbs starved my gut biome causing leaky gut, food sensitivities, and other problems (like high cortisol in the AM waking me early and interfering with my sleep), so I've added carbs back into my diet.  I still avoid all grains, processed foods, and seed oils, but have added most fruits and vegetables back into my diet.  I also make my own goat milk yogurt with particularly useful strains (from "Super Gut").  I'm still trying to find optimal for me, but I am doing better now. 

 yeah, i think the "definitely bad" list is valid but the "eat only this" list is stupid

i can say that seed oils and artificial sweeteners definitely seem to cause magnesium, boron and potassium deficiency though

and this peripheral neuropathy... i think Jack Kruse is pretty much on point about all this stuff and he's not rabid carnivore or keto, his recommendations are mostly paleo and related to whatever the modern poisons have upset 

 I haven't touched any artificial sweeteners (at least intentionally) for at least 2 decades. 

 yeah, here in europe maybe 75% of packaged/bottled drinks are contaminated... a very small number of them use stevia which is mostly ok but i think it's also a problem similar to liqorice 

 I'll use a little stevia or monk fruit, but never the chemical sweeteners.  Even with the stevia and monk fruit, I think moderation is important. 

 i'm pretty sure that all artificial sweeteners are nephrotoxic (harm the kidneys)... liquorice certainly is, and stevia is closely related chemically, and for sure most of the synthetic ones are also nephrotoxic... acesulfame-k and sucralose i'm almost certain that one or both of them causes potassium deficiency