According to the American Journal of Clinical Nutrition.
The human life span. or the maximum length of time possible for human life, (130 years) Ordovas, J. M. Living Well to 100 Nutrition.
Genetics : Inflammation’ Am J Clin Nutr 83  Human bodies change significantly over time, and food is the fuel for those changes. People of all ages need the same basic°
Nutrin : tsessential amino acids, carbohydrates, essential fatty acids, and twenty-eight vitamins and.
Minerals : to sustain life and health. However, the amounts of nutrients needed differ. Throughout the human life cycle, the body constantly changes and goes through different periods known as stages. The major stages of the human life cycle are defined as follows.
Pregnancy : The development of a zygote into an embryo and then into a fetus in for childbirth.
Infancy : The earliest part of childhood. It is the period from birth through age one.
Toddler years. Occur during ages two and three and are the end of early childhood.
Childhood. Takes place from ages four to eight.
Puberty : The period from ages nine to thirteen, which is the beginning of adolescence. 12 to 13
Older adolescence : The stage that takes place between ages fourteen and eighteen.
Adulthood : The period from adolescence to the end of life and begins at age nineteen.
Middle age : The period of adulthood that stretches from age thirty-one to fifty.
Senior years, or old age.
Extend from age fifty-one until the end of life.