Eggs are increasingly used nowadays without the egg yolk as we falsely believe that yolk contributes to increase in body weight of an individual. A new study has found that this practice of discarding the egg yolk to maximize dietary protein intake is disadvantageous.
In reality, egg yolk contains protein and some other nutrients that are not present in egg whites. The yolk also is said to contain a component that helps the body to utilize the available protein in the muscles. The study further suggests that eating protein that is naturally available, like in egg yolk, is more advantageous to our muscles instead of acquiring protein from isolated protein sources as discussed at https://www.sciencedaily.com/.
Study Environment & Results
The study involved 10 men who performed resistance training exercise and then consumed egg whites containing 18 grams of protein or whole eggs. Researchers injected these individuals with two important amino acids and took repetitive blood and muscle biopsy samples to study their appearance and the effect of these amino acids in protein synthesis in muscles before and after resistance exercise and training.
Eating whole eggs or only the egg white provided an individual with the same amount of dietary amino acids in the blood, almost 60-70% was available to build new muscle protein.
But, measure of protein synthesis in the muscle offered a drastically different response-eating whole eggs immediately after resistance training lead to greater muscle-protein synthesis than eating egg whites. This study shows that simply adding fat to a protein source in the diet after exercise is not going to boost protein synthesis in any way. Recently, nutritionists and dietitians have been stressing the importance of protein nutrition and even research shows that we need more protein in the diet than that we assumed to be enough for our body sometime back. To fulfill this need, inexpensive protein sources work best and eating egg protein in its natural environmental existence is more useful that getting isolated protein.
Dietitian & Nutritionist Dr. Nafeesa Imteyaz.