Understood. I did read it and i'm familiar with Keto. I agree that it has numerous health benefits, especially for people that are diabetic or have very low insulin sensitivity. The restrictions on carbs and protein result in an immediate, and normally very large, calorie deficit.
The main problem I have with keto is that it's rare for people preaching this diet to ever teach someone how to manage a total calorie deficit/surplus. More importantly, you don't normally hear about how to successfully end the cutting phase once your calories are bottomed out (after you've lost the desired amount)
I understand that your body is burning fat, but if you go from consuming 4000 calories/day before keto to 2500/day on keto, that is a sharp and unsafe decrease. You'll drop weight like crazy and your body will be in ketosis, but your metabolism will slow WAY down to keep you from practically passing out due to lack of fuel. Add in the fact that your sodium, potassium, and magnesium also decrease on a keto diet and it's an easy diet to mismanage.
Then...when you've lost the weight you want to lose...what's next? Are you going to switch to a balanced diet and slowly increase calories, or do what most people do and say "i lost 100 lbs, goal met, no more keto" with no knowledge of what their calorie intake has been over the last several months. More often than not, it's the latter, which is why it's common to bounce back HARD.
