Trace elements can greatly affect the human health. They are the components of enzyme, hormones, vitamins and nucleic acid. If people do not supplement adequate trace elements like , , and copper, they can be seriously troubled by various problems like hair loss. 

1.zinc
Zinc is the essential material for the formation of more than 300 kinds of enzyme. At the same time, it plays an important role in accelerating the synthesis of nucleic acid and protein. The lack of zinc can be caused by the inadequate supplementation and the disturbed absorption. According to the research, the lack of zinc can seriously affect the growth of hair and even cause hair loss.

2.calcium
Calcium plays an important role in protecting the heart, nerves, muscles, bones, teeth, skin and hair of the human body. If people find that their hair has gradually become gray, they should supplement calcium to solve the problem in time.

3.iron
Iron can effectively maintain the normal metabolism inside the human body. At the same time, it is the essential component of hemoglobin. The normal growth of hair can be disturbed by the lack of iron. If people can not absorb adequate iron in time, alopecia areata and hair loss can be seriously induced.

4.copper
The adequate supplementation of copper can improve the absorption of iron, maintain the integrity of cardiovascular system and protect the immune system. The appearance of hair loss can probably indicate the lack of copper inside the human body. If people usually maintain the balanced diet, they will not be troubled by the deficiency of copper. The deficiency of copper can only be caused when the intestines and the kidney are hurt.

In order to prevent the formation of hair loss, people should maintain the reasonable diet to supplement vitamins, trace elements and mineral substances in time. The intake of the food like green vegetables, fruits and fish should be moderately increased. According to the modern medicine, people should frequently eat animal liver, black sesame, walnut, lean meat and soy bean so as to supplement iron, zinc, calcium and copper. In addition, if possible, people can often eat polygonum multiflorum. Polygonum multiflorum contains abundant amino acid, zinc, vitamin A, vitamin B, vitamin C, calcium, zinc and iron. The intake of polygonum multiflorum can not only prevent hair loss, but also improve the physical immunity for the human body.