There are several fundamental ways to lose weight, and protein plays a role in almost all of them.
No matter what the diet, it is absolutely necessary to reduce calories below what you normally eat as you stay the same weight.
That's simple enough, but cutting back on the foods you love and going hungry makes it tricky, and many people fail at this proven approach.
Making sure you eat quality snacks between healthy meals is the best way to avoid caving in.
The important thing is to remember to keep your metabolism amped - Avoid sugars and simple carbs, even more-so than fat if it's later in the evening.
Some examples of high protein snacks are beef jerky, almonds, turkey/chicken wraps, and other lean meats.
Snacking between meals is usually a diet no-no, but there are ways to go about it without this being so.
Protein is much less fattening than any carb (including sugar), or fat.
In addition to that, protein is necessary to retain lean muscle mass.
If you're losing weight, you want to be losing fat.
Retaining muscle not only helps you look better after the fat comes off, but it it's important in reducing fat in the first place.
Muscle mass works with your metabolism to burn more fat per pound than any other tissue in your body.
Even as you sleep, your muscle mass is hogging up a lot of attention from your body, and as such your body sacrifices energy.
What this translates to is a faster metabolism from simply keeping protein intake high during your diet.