Proteins contribute to weight loss of excess fat
If you support the intake of dietary fat with higher intake of protein, you have nothing to worry about. Protein contributes to burning fat, if large amounts of carbs are not ingested.
This backed up with proper weight training, will activate hormones which directly contribute to burning fat, fat loss and muscle-mass growth.
All carbs are not same (so what?)
There is a difference between carbohydrates. Some of them are simple (fast) and some are complex (slow).
Fast carbs (such as white bread, sugar) are very quickly broken down in the body and trigger fast insulin response.
Complex carbs (beans, lentils, rice…, vegetables, whole grain food – oats, rye, barley) trigger insulin in a slower manner. But this doesn’t change the fact that whether complex or simple, carbs increase blood sugar which lowers growth hormone (the key hormone to build muscle mass and lose excess body fat) and spikes insulin which causes weight gain (by excess body fat). Don’t be fooled by “Complex carbs don’t make you fatter.”
Note on sugar: usual white sugar, brown sugar and fructose (fruit sugar) trigger high-insulin spike and storing fat. Fructose exists in processed form of sugar and can be bought as such. And although fructose or brown sugar are considered healthier than white sugar, they’re fast carbohydrates and friends with body fat.
The most important thing to have in mind if you intend to lose the excess body fat, is that your body won’t break down and use the fat reserves while there are carbs and elevated insulin present around.