A protein diet is a type of weight loss plan that focuses on consuming high amounts of protein while reducing overall calorie intake. The idea behind this type of diet is that by eating more protein, individuals will feel fuller for longer periods and be less likely to overeat or crave unhealthy foods. Protein-rich foods such as lean meats, fish, eggs, dairy products, legumes, nuts, and seeds are encouraged in order to promote muscle growth and maintenance while shedding excess fat. A protein diet can be effective for weight loss when combined with regular exercise and proper portion control.