How does eating protein help your brain?

Protein is made up of many amino acids. There are eight kind of amino acids essential to health. Food full of protein such as fish, eggs, poultry and veggies contain the eight type of amino acids. Neurotransmitters contains amino acids allowing your brain cell to communicate. If a person is lacking protein, it is natural if the brain might not function properly. Also, protein will also help with brain injuries according to some studies in the US.