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Protein and Weight Management â. Consuming a higher protein diet can help you lose weight. Protein helps regulate appetite and cravings by enhancing the feeling of fullness for longer after a meal or snack.
1 Essential body processes such as water balancing, nutrient transport, and muscle contractions require protein to function. 2  Protein is a source of energy. 3  Protein helps keep skin, hair, and nails healthy.  Protein, like most other essential nutrients, is absolutely crucial for overall good health.