A little insulin is great because it sends fuel to the muscles but too much insulin and the fuel calories start piling up in the fat cells. Worse, high insulin also skyrockets the enzyme, lipoprotein lipase, and you think you are starving. When insulin is controlled by lower carbs and higher protein, the body taps stored fat for energy. Yes, low carb eating plans increase ketones. But is that really so bad.
Ketones are a normal byproduct of fat oxidation.
Ketones can be used for energy and will help to spare my muscle tissue. So keep the protein high and lose those extra carbs. And just be intelligent with the fat. If you eat sensibly and don't go sucking on a stick of butter, your fat levels shouldn't be a problem. This is a real mine-field.