Assimilating Proteins Burns Up a Lot of Calories - to understand this you need to familiarize yourself with the idea of the specific dynamic action (SDA) of foods. The SDA of a food represents the effort or energy that the body has to use to break down the food until it is reduced to its basic unit, which is the only form in which it can enter the bloodstream. To assimilate 100 calories of pure protein— egg whites, lean fish, or fat-free cottage cheese— the task is enormous. This is because protein is composed of an aggregate of very long chains of molecules whose basic links, amino acids, are connected to each other by a strong bond that requires a lot more work to be broken down. It takes 30 calories just to assimilate the proteins, leaving only 70 usable calories. Thus the SDA of proteins is 30 percent. Assimilating proteins makes the body work hard and is responsible for producing heat and raising our body temperature. At the end of the day, after eating 1,500 calories worth of proteins, a substantial intake, only 1,050 calories remain after digestion.
Proteins Reduce Your Appetite - snacking on proteins does delay your urge for your next meal and does reduce the amount that you then eat. What is more, eating only protein foods produces ketones, powerful natural appetite suppressants that are responsible for a lasting feeling of satiety.
Proteins Fight Edema and Water Retention - Certain diets or foods are known as being “hydrophilic”—that is, they encourage water retention and the bloating this causes. This is the case for mostly vegetable diets, rich in fruits, vegetables, and mineral salts. Protein- rich diets are the exact opposite. They are known to promote elimination through urine and, as such, provide a welcome purge or “drying out” for tissues gorged with water, which is a particular problem during the premenstrual cycle or during perimenopause.
Proteins Enable You to Lose Weight Without Losing Muscle or Skin Tone - A diet lacking in proteins forces the body to use its own muscles and the skin’s proteins, so the skin loses its elasticity. Combined, these effects cause aging of the skin, the hair, and even one’s general appearance. A diet high in protein has no reason to attack the body’s reserves because the body is being given massive protein supplies.