Adolescents, teenage boys and girls undergo rapid growth. So, it is necessary to take care of their nutrition and see that their growth does not become stunted. Children from 11-13 years are known as pre-adolescence, 14-17 years as adolescents and 18-20 years as late adolescents. This period is a period of semi-growth and also termed as transition from childhood to adulthood. Adolescents reach their maximum adult height and also gain in weight because of growth of fat tissues. Adolescence period is a period of rapid growth and development at all levels namely—social, physical and psychological. There are many body changes which results due to the influence of hormones. Growth and Developments during Adolescence
The important changes during this period are as follows : Increase in height and weight. The process of physical development from a child to an adult is called puberty. Adolescence period is commonly known as the second growth to make a sudden violent effect. In girls, growth in height, and weight is the greatest in the years prior to menarche, girls hardly gain 2-3 cm in height after the onset of menstruation. But in boys, the growth in weight and height continues till late teens.
Body composition. During the process of maturation, composition of body also changes. Boys gain more weight at a faster rate and their bones growth continues for a longer period of time than girls. As the mineralization of the bones increases, water content of bones diminished gradually. The difference in body composition of girls and boys also leads to a difference in their nutritional requirements.
Sexual maturity. In girls, there is development of breasts and pubic hair. Menarche occurs only after this rapid period of growth. In boys, sexual changes like deeping of the voice, development of axillary body pubic hair, broadening of shoulders, and growth of the penis and testis
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