I know 3 people who have been told by their doctors to eat keto to stave off pre-diabetes symptoms and keep them from becoming diabetic.Things we all have to agree on for this conversation to have any sense:
A Ketogenic diet works by putting the body in ketosis do to the absence of carbohydrates. Then we can discuss other benefits, pros and cons.
Calories are all the same and equal by definition, a calorie is just the unit of heat energy. One calorie is defined as the heat energy required to raise the temperature of one gram of water by one degree Celsius.
Regardless of the food source of your calories you have to be in a deficit to lose weight. This is not up to interpretation and is not a matter of opinions.
A good discussion would be calorie sources and the other attributes and roles they have in the body.
Furthermore..
Is cutting carbs in general enough for the average person to end up in caloric deficit and therefore lose weight? Sure.
Will they sustain a Ketogenic diet for the rest of their life? Most likely NOT.
Guess what happens when they reintroduce carbohydrates? The weight comes back. Is it because carbs are bad? NO ! It's because they put their body in survival mode, that's what ketosis is, and now the body will store even more fat as soon as it has the opportunity.
Let's talk science not personal opinions, this isn't like trying to decide what shoes look better on a person.
They are all doing much better now.
Your focus on calories in misses the point and the mechanisms that make the keto diet work.
This page has a good explanation.
https://www.ruled.me/ketosis-ketones-and-how-it-works/
And yes, the keto diet is sustainable.





