How can a lack of protein affect human

Signs and symptoms of protein deficiency

Skin, hair and nail problems.

Loss of muscle mass.

Increased risk of bone fractures.

Bigger appetite and increased calorie intake.

Risk of infections.

Fatty liver.

May inhibit proper body growth in children

Explanation:

When dietary protein is in short supply, the body tends to take protein from skeletal muscles to preserve more important tissues and body functions. As a result, lack of protein leads to muscle wasting over time. Even moderate protein insufficiency may cause muscle wasting, especially in elderly people.