What foods contain protein ? Here are the richest food sources of protein: Lean meats such as beef, chicken, turkey, and lamb. Fish such as tuna, salmon, cod, sardines, mackerel, and mussels. Legumes such as lentils, chickpeas, beans, peas, edamame, and soybeans. What are proteins for? Why are proteins important? Along with carbohydrates and lipids, proteins are one of the three macronutrients essential for our survival: they ensure the growth and renewal of tissues , allow digestion, the development of immune defenses and the transport of oxygen in the blood . In which foods are proteins found? Sources of protein are: all foods of animal origin (meat, fish, eggs, milk and dairy products) legumes the nuts oil seeds cereals, to a lesser extent. What are proteins in simple words? Proteins are large, complex molecules that play a number of critical roles in the survival of an organism; they are responsible for most of the processes that occur in every cell, but they are also necessary for the structure and proper functioning of tissues and organs .
