What are signs your body needs more protein daily?

Your body sends several signals when protein intake is insufficient. Muscle loss or weakness is one of the clearest signs, since your body breaks down muscle tissue for amino acids when dietary protein is lacking. You may also notice slow wound healing, frequent illness due to a weakened immune system, and persistent fatigue or low energy. Hair thinning, brittle nails, and dry or flaky skin are common because these tissues depend heavily on protein for structure and repair. Constant hunger and cravings, especially for carbohydrates, can also indicate inadequate protein, since protein is the most satiating macronutrient. Edema, particularly swelling in the legs and feet, can occur in severe cases due to low albumin levels affecting fluid balance.