Not eating trans your metabolism to hunker down. Train your metabolism to process fats and proteins and the weight comes off without starving. Say goodbye to carbs, however.
If you are 150 pounds overweight you need to stop eating. Your body needs to hunker down. I have seen people do it. Much safer than surgery.
An effective calorie restriction diet becomes effective because it becomes naturally ketogenic. The body stops living on foods, and starts living on stored adipose fat.
This fact should convince anyone that ingesting fats instead of carbs is a more valid method of weight loss and glucose control. We don’t store fats as carbs. We store carbs as fat.