Name the problems which occur due to lack of proteins.

Proteins:

1. Proteins are large and complex molecules that are formed by the long chains of amino acids.
2. It is essential for all living organisms as it performs various essential processes of life.

Problems due to lack of proteins:

1. Edema: swollen and puffy skin.
2. Fatty liver: Excess deposition of fat in liver cells.
3. Lose muscle mass which results in decreasing the strength.
4. Slower metabolism.
5. Discolourisation of hair.