The investigation on the nutritional health status of Chinese residents shows that the imbalance of trace elements is the root of all chronic diseases. The following diseases may be related to zinc de

The investigation on the nutritional health status of Chinese residents shows that the imbalance of trace elements is the root of all chronic diseases. The following diseases may be related to zinc deficiency (). A, iodine is the main element to synthesize thyroid hormone, and iodine deficiency will lead to goiter, so A is wrong;

B, calcium is the main element of bones and teeth, lack of children and adolescents will suffer from rickets, the elderly will suffer from osteoporosis, so B is wrong;

C, zinc affects people's development, loss of appetite, growth retardation, dysplasia, easy to suffer from dwarfism, so C is correct;

D. Long-term selenium deficiency will affect the integrity of cell membrane, leading to decreased vision and various eye diseases, so D is wrong.

So choose C.