Essential and Toxic Trace Elements and
Vitamins in Human Health

Micronutrients play major roles in the maintenance of human health. The knowledge in this field is scattered, and practicing
physicians, medical students, and health professionals have only a fragmented concept of this field. For example, iron is
covered in detail in hematology textbooks. Iodine is covered in endocrinology, copper toxicity is seen in Wilson’s disease,
and this is covered in textbooks in sections on liver diseases or neurological diseases. Zinc is covered in biochemistry and
nutrition textbooks. The result is that practicing health professionals have only a limited and fragmented knowledge of
micronutrients in human health