Zinc is one of the most important trace elements in the body, performing many biological functions such as enzyme catalysis, the structure of many proteins, hormones. Zinc is also considered a major element contributing to the process of cell division and differentiation, programmed cell death, and gene transcription. Its diverse biological roles make zinc deficiency possible to lead to a number of adverse health effects. Zinc supplementation is effective in treating diseases caused by zinc deficiency. In addition, many experimental studies have mentioned that zinc is also related to the aging process of the body, thereby emphasizing the importance of zinc in the elderly.