Lack of selenium leads to cancer in humans and animals. Each element plays a specific, very important role in ensuring the vital functions of the body. As a rule, the biological effect of this or that microelement depends on the presence of other elements in the body, i.e. each living organism is a unique balanced system, the normal operation of which depends, among other things, on the correct ratio of its components at any level of organization.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.