That's because there are two ways to lose weight:
Originally Posted by FrankOcean
• Starvation/caloric restriction - Where you eat less calories than you burn by tring to force yourself to eat less and burn more. You are fighting against natural reactions to restrict expenditure on less calories and you often lose muscle mass with body fat as your body fights to retain energy as a safety measure.
• By turning off fat storage and raising metabolism. Probably still due to caloric deficit by massively raising calories used in processes like futile cycling. This is what eating lots of fat and very low carb does. The other ways to enhance this are IF, strength training, etc.
By eating low carb and restricting calories, you are just doing the first one and likely won't get any of the benefits of a raised metabolism, because survival systems take priority.
As a lot of us keep saying, you need to eat until satiated.
I'm quite happy to agree with Taubes and say - It's not about how much you eat, but what and when. If you eat enough fat and low enough carbs you can eat as much as you physically can force in and still lose weight. I've seen it happen.
The "Seven Deadly Sins"
• Grains (wheat/rice/oats etc) . . . . . • Dairy (milk/yogurt/butter/cheese etc) . . . . .• Nightshades (peppers/tomato/eggplant etc)
• Tubers (potato/arrowroot etc) . . . • Modernly palatable (cashews/olives etc) . . . • Refined foods (salt/sugars etc )
• Legumes (soy/beans/peas etc)