Different types of protein sources vary significantly in their nutritional benefits. Animal-based proteins, such as meat, fish, and dairy, tend to offer complete proteins, containing all essential amino acids necessary for the body. They also provide vital nutrients like iron and vitamin B12. On the other hand, plant-based proteins, such as legumes, grains, and nuts, may lack one or more essential amino acids but are rich in fiber and antioxidants. Combining different plant sources can create a complete amino acid profile, ensuring adequate protein intake while promoting overall health and wellness.