9 Disadvantages 9: People who are too emaciated with anemia generally have the problem of unbalanced nutrient intake, and hematopoietic substances such as iron, folic acid and vitamin B 12 are insufficient; Because of eating less, the basal metabolic rate is lower than that of ordinary people, so the slow gastrointestinal movement and less gastric acid secretion affect the absorption of nutrients, which is the main cause of anemia.

In addition, malnutrition reduces the body's immunity and is prone to secondary anemia.

10 Disadvantages 10: The main components of alopecia are protein called fish protein and trace elements such as zinc, iron and copper. Too thin people have insufficient supply of body fat and protein, so their hair frequently falls off and their hair color gradually loses its luster.