Proteins are responsible for approximately 15% of the mass of the average person. It is the main component of muscles, organs and glands, and is crucial in the maintenance of muscles, tendons and ligaments. Without it the body would be unable to replace or repair cells and is required by all humans for growth and development, especially in children and teenagers. It is even more crucial in times of infection, injury and some illnesses as an insufficient protein intake in the diet can result in the body turning to protein already being used for a purpose in the body, for example the protein in muscles. This can then lead to muscle mass decreasing and the long term implications could be life threatening.

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