According to Erik Erikson's stages of human development, first enumerated in Childhood and Society (1950) a<unk> is a person between the ages of 18 and 40, whereas an adolescent is a person between the ages of 12 and 17. The<unk> stage in human development precedes middle<unk> hood. A person in the middle<unk> hood stage is between the ages of 40 and 65. In maturity, a person is 65 years old or older.
Young adult 
Cancer previvor
Cancer survivors
Cancer patient
Male
Teenage pregnancy
Hypertension in adolescents
Senile