What are the effects on the human body by the diseases caused due to protein deficiency?

Due to protein deficiency, two types of diseases occurs- Kwashiorkor and Marasmus. In kwashiorkor disease children stomach grows, irritability, loss in appetite, change in skin and hair color occurs, growth stops, weight decreases etc. In marasmus disease along with protein if there is insufficient energy in diet children lost a lot of muscle mass, the body becomes weak, eyes go inside and sometimes blindness also occurs.