Your flair ups were due to the combination of eating high dietary fats with carbs/sugar. It's not the carbs/sugar per se causing it. It's the interaction of high fats and glucose in the blood causing it. The fats are to blame, just like the fats smother insulin receptors, thereby, causing type 2 diabetes.
Fact.
You can't have too much juice or sugary foods, as long as you keep your dietary fats very low. If you keep your dietary fats very low, you can eat as much carbs and sugar as you desire - as much as your body tells you that you're hungry. Also, carbs/sugar satiate the body much more than meats and fats. That's why desert is ALWAYS after the main course meal. If meats and fats were satiating, then the custom for diets wouldn't have deserts post-dinner.
Fact.
Carbs/sugar don't get stored as fat. That's a lie. The highest fat-causing diet is eating high dietary fats and carbs/sugar; but eating a carnivore/keto diet, also, causes obesity and other health problems. Carnivore/keto is, also, unsustainable because of low energy and, ultimately, craving for carbohydrates which leads to binge eating which, in combination with high dietary fats, will cause a person to explode in weight.
The carnivore/keto diet is meant to be a short-term thing. To "reset" your body from years of oil/sugar problems.
One could also "reset" using the Catholic fast...which is basically a high-carb diet.
High carb/sugar and very low dietary fat diet will induce body fat reduction. Guaranteed. It's biochemical law.
Fact. The "old fashioned" catholic fast was basically high-carbs. 0 fats (except from fish...which is good fat). And the only protein was (again) from fish.
The "old fashioned" fast (i.e. early 1900s and back) was this:
1) No Dairy. No milk. No cheese. No eggs. No animal products whatsoever. (i.e. no fats)
2) No protein (except fish, which has high omega 3s, the only good fat, but relatively a small amount).
3) Veggies, fruits, bread, pasta -- that was the basic meal.
Keep your dietary fat very low, and eat as much carbs/sugar as your body desires, and you will shed body fat - guaranteed. But you must avoid foods that contain both sugar/carbs and fats, too. People idiotically blame the sugar for causing them to get fat but it's the dietary fat in the same food causing the gain in weight.
Fact.
No athlete or fitness guru eats a high-fat diet. They eat "lean proteins" (chicken), veggies, rice, pasta, complex carbs etc. Fats are only added by supplement and in small quantities.