Please take a look at the following RG link.

Article Zinc and human health: An update

For the proper working of immune defense system in the body Zn is essential. It helps cell division, cell growth, wound healing, carbohydrates metabolism and working of sensory organs like smell and taste.

Dear Dr. Abul Kalam Azad,

Zinc is a trace element that is responsible for numerous functions in the human body. It is necessary in trace amount but is essential to stimulate the activity of at least 300 different enzymes. Deficiency of zinc can alter some metabolic activities and make a person more susceptible to disease and illness. For the further information, following articles seem to provide a quick insight :

Recent aspects of the effects of zinc on human health; Archives of Toxicology,  94, 1443–1460 (2020)

Zinc and its importance for human health: An integrative review; J Res Med Sci. 2013; 18(2): 144–157

Dear Md. Abul Kalam Azad please see the article cited below which is available as full text on RG:

Article Zinc and its importance for human health: An integrative review

Dear Md. Abul Kalam Azad please also check out the answers to this closely related thread on RG:

https://www.researchgate.net/post/What_are_the_sources_of_zinc#view=5f5000729806a72cdf12dca3

Zinc is an essential element in the body that helps in the body immunity, metabolic processes, synthesis of DNA, anti oxidation, growth and many more

zn a cofactor work multiple. In human body various metabolic biochemical pathway that responsible for multiple funtion among one immunity and alter affect of covid. This, it consider important in covid

Article Physiological role of zinc

Accordingto the link cited below, "zinc contributes to numerous metabolic reactions involved in":

• Growth and cell division,
• Fertility,
• The immune system,
• Taste, smell and appetite,
• Skin, hair and nail renewal,
• Eyesight
• https://www.health.harvard.edu/newsletter_article/Nicotine_It_may_have_a_good_side

Please take a look at the following RG link.

Article Zinc and human health: An update

Zinc is found as component of more than 300 enzymes and hormones and plays a crucial part in the health of our skin, teeth, bones, hair, nails, muscles, nerves and brain function as well as it is essential for growth. Zinc controls the enzymes that operate and renew the cells in our bodies.

Please take a look at the following link.

Article Zinc and its importance for human health: An integrative review

Please have a look into the following link, though it is an article written decades back, it is informative.

Article The role of zinc in human health

You may go through the link below for a better insight>

Article A potential medicinal importance of zinc in human health and...

Zinc boosts the immune system and controls the enzymes which renew the human cells.

Md. Abul Kalam Azad

Zinc and its importance for human health: An integrative review

www.ncbi.nlm.nih.gov › pmc › articles › PMC3724376

Zinc is found as component of more than 300 enzymes and hormones and plays a crucial part in the health of our skin, teeth, bones, hair, nails, muscles, nerves and brain function as well as it is essential for growth. Zinc controls the enzymes that operate and renew the cells in our bodies.

http://www.iosrjournals.org/iosr-jdms/papers/Vol13-issue7/Version-2/E013721823.pdf#:~:text=Zinc%20is%20found%20as%20component,the%20cells%20in%20our%20bodies.

http://www.fao.org/3/y2809e/y2809e0m.htm

Article Zinc in Human Nutrition

Article Zinc and its importance for human health: An integrative review

Improve metabolic activity

Many thanks for sharing your knowledge

Zinc (Zn) is a ubiquitous trace element and one of the most important trace elements in the body. It is indispensable to the growth and development of microor-ganisms, plants, and animals.

Zinc (Zn) is a ubiquitous trace element and one of the most important trace elements in the body. It is indispensable to the growth and development of microor-ganisms, plants, and animals.

Good discussion. Many answers / links provided by researchers are appropriate that define role of zinc for human health.

Zinc plays great role in body metabolism. Zinc metalloenzymes maintains the acid-base balance in the body.

Dear Md. Abul Kalam Azad please find attached a useful article entitled

The importance of zinc in human nutrition andestimation of the global prevalence of zinc deficiency

Zinc is necessary for the activity of over 300 enzymes that aid in metabolism, digestion, nerve function and many other processes. Also it's critical for the development and function of immune cells

Dear Md. Abul Kalam Azad I wonder why zinc is essential for the human body, whereas cadmium and mercury are toxic, although all three elements constitute the same group in the Periodic Table. 😳

Zinc, a nutrient found throughout your body, helps your immune system and metabolism function. Zinc is also important to wound healing and your sense of taste and smell. With a varied diet, your body usually gets enough zinc.

Thank you

Zinc is an essential element, the third of the trace elements after iron and copper. The recommended daily allowance is 15 milligrams for adults and 5 milligrams for children. The characteristic symptoms of zinc deficiency in humans are: skin damage, stunted growth and retarded sexual maturation. Clearly zinc plays an essential role in many enzymes hydrolytics in biology being one of the most studied elements in bioinorganic chemistry. Examples of zinc enzymes: carbonic anhydrase (CA), carboxypeptidase (CP) and alcohol dehydrogenase (LADH).

I agree with Hermad zn trace element work in metabolic pathway but overdose to toxic from cancer to neurodegenerative and other disorders.

Why do we need zinc?

"Zinc is a component of more than 300 enzymes involved in energy metabolism, synthesis of proteins, nucleic acids, growth and differentiation of cells (especially immune tissue), the formation of the extracellular matrix (collagen)."

Zinc is needed for the production of proteins and DNA, for muscle growth and repair, is important for the correct sense of taste and smell, promotes wound healing, helps the immune system fight bacteria and viruses, improves digestion, and regulates hormone production.

How much zinc does the human body need?

“The daily requirement for zinc is currently 15 mg for men and 12 mg for women. However, modern research suggests that it is possible that these standards will be revised upwards by two or three times.

With age, the need for this trace element increases. It also occurs in women during pregnancy and during breastfeeding, as well as in persons of both sexes with prolonged physical and emotional stress

Zinc deficiency leads to

- impaired growth, including in the prenatal period (decrease in linear growth and body weight)

- disorders in the immune system (with a lack of zinc, an increased tendency to pneumonia, diarrhea, etc. is revealed)

- complications of pregnancy (with a lack of zinc, premature births, fetal malformations are observed)

- macular degeneration (with age, the amount of zinc in the retina decreases, which is also one of the prerequisites for deterioration of central vision)

Regards, Pushkin Sergey Viktorovich

The following web-links maybe useful.

https://sightandlife.org/blog/introducing-zinc/

https://www.healthline.com/nutrition/zinc

Thanks for sharing your knowledge

Agreed with Gautam Bhardwaj and Raya Al Nami

Zinc plays a key role in spermatogenesis from several perspectives and located primarily in the Lyding cells. Its crucial for sperm motility, influences directly on sperm morphology and plays an important part in capacitation. However, various biological factors, heavy or regular use of alcohol, smoking and endocrine abnormalities are the major factors associated with decrease level of seminal plasma zinc level.

Md. Abul Kalam Azad

An overview of zinc and its importance in dermatology- Part I ...

oatext.com › An-overview-of-zinc-and-its-importance-i.

Zinc, a micronutrient, is essential for the normal growth, immune function and reproduction of humans. It is vital for the functionality of more than 300 enzymes, for the stabilization of DNA, and for gene expression.

It plays many functions, including the boost up body immunity.

Read the very interesting research article

Article Zinc and its importance for human health: An integrative review

Article Recent aspects of the effects of zinc on human health

Article Physiological role of zinc

Article Antioxidant and Anti-Inflammatory Effects of Different Zinc ...

Thanks Sadanand Pandey for sending link for a very good and interesting article regarding role of zinc in human body.

We in Bangladesh, developed Zn-enriched rice varieties as it is main food for us. People can get Zn through intake of rice daily.

Zinc (Zn) is one of the most important essential nutrients of great public health significance. It is involved in numerous biological functions and it is considered as a multipurpose trace element, due to its capacity to bind to more than 300 enzymes and more than 2000 transcriptional factors. Its role in biochemical pathways and cellular functions, such as the response to oxidative stress, homeostasis, immune responses, DNA replication, DNA damage repair, cell cycle progression, apoptosis and aging is significant. Zn is required for the synthesis of protein and collagen, thus contributing to wound healing and a healthy skin. Metallothioneins are metal-binding proteins and they are potent scavengers of heavy metals, including Zn, and protect the organism against stress. Zn deficiency is observed almost in 17% of the global population and affects many organ systems, leading to dysfunction of both humoral and cell-mediated immunity, thus increasing the susceptibility to infection. This review gives a thorough insight into the most recent evidence on the association between Zn biochemistry and human pathologies, epigenetic processes, gut microbial composition, drug targets and nanomedicine.

Please read more in the following article:

DOI: 10.1007/s00204-020-02702-9