Although I'm not actively low-carbing, I have tried several approaches in the past. Granted most people will see astonishing results the first month or so on the low-carb diet, but after much research and persoanl experimenting I've come to the conclusion that it's not high-fat/low carb cut-n-dry. You have to be selective on your fat and protein choices. Including natural fat and protein will be your best bet. (steak, chicken, turkey, natural peanut butter, various nuts, olive oil, fish, flax, whole eggs.)

Processed foods are the enemy. (hotdogs, McD's meat patties...)

The evil that's creeping in and tinkering with blood cholesterol levels and other health issues is the hydrogenated fat in dressings, most dariy, processed meat, etc.

If the food choices are kept as whole and natural as possible, blood results will be better and you can incorporate more fibrous veggies to compensate for the removal of processed and foods.