Different people need different amounts of nutrients for optimal health. Indeed each of person has own nutrient need, determined by a host of factors such as sex, age, physical activity and genetics.
RDAs currently address as many as 22 specific categories of human beings: boys, girls, men, and women from infancy though middle age.
Eventually , recommendation will be made for people older than 85. Knowledge about the nutrient needs and nutrition status of older adults has grown considerably in recent years.
As people age, they may suffer different chronic diseases and take different medications – both have impacts on nutrient needs.
If age is important, so gender, For people, because women of childbearing age lose iron when they menstruate their RDA for iron is higher than RDA for men.
Pregnancy is a period characterized by increased production of hormone because of the development of fetus. There is a need for additional protein because of the fetus and the needed protection of the mother against diseases s and infection.
On the other hand, because men who are sexually active lose zinc though their ejaculations, the zinc RDA for men is higher than the zinc RDA for women.
The gender affects body composition, which includes other RDAs, such as proteins.
College aged male who is a member of the soccer team is likely to have higher nutritional requirements than a comparable class mate who is relatively inactive.
The requirements of nutrient for different people
