The aim of this study is to familiarize the Role of nickel in the Environment and in living organisms. This metal is widely used in many fields such as electrical engineering, medicine, Jewellery or Automotive Industry. Furthermore, it's an important part of our food. As the central atom of bacterial enzymes it participates in degradation of urea.. Nickel is also an micronutritient essential for proper functioning of the human body, as it increases hormonal activity and is involved in lipid metabolism. This metal makes it's way to the human body through respiratory tract, digestive system and skin. Large doses of nickel or prolonged contact with it could cause a variety of side effects. Harmfull effects of Nickel are genotoxicity haematotoxicity, teratogenicity, immunotoxicity and carcinogenicity. The population of people allergic to nickel is growing, it occcurs much more often to the women and it can appear in many way. Hypersensitivity to nickel can also be occupational. Due to the increasing prevalence of allergies to nickel. European regulations have been introduced to reduce the content of this metal in products of everyday usage. In countries which have fulfilled the above-mentioned law, the plunge of hypersensitivities has been observed.
Keywords: allergy; industry; nickel; toxicology.
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