Adolescence — REET Notes

What is adolescence

Adolescence is the transition stage from childhood to adulthood, generally considered to fall roughly between 11 and 19 years of age (the World Health Organization places it in the 10-19 year range). During this period, rapid changes happen at every level — physical, emotional, mental, and social.

Puberty is the phase within adolescence in which the reproductive organs mature and become functional — in other words, puberty is mainly a physical/biological change, while adolescence is a broader term that also includes emotional and social development. This distinction is worth holding onto: puberty names the physical, reproductive maturing process itself, while adolescence names the whole developmental stage — physical, emotional, mental, and social — within which that process happens.

Hormonal changes during puberty

Puberty begins with signals from hormones secreted by the pituitary gland in the brain, which activate the reproductive organs (testes and ovaries). In boys, the secretion of the hormone testosterone from the testes increases, while in girls, the secretion of the hormone estrogen from the ovaries increases. These hormones are responsible for the development of secondary sexual characteristics and for reproductive capability; in girls, estrogen also controls the menstrual cycle. Because this signal starts in the pituitary gland in the brain, the timing of puberty is governed by the body's own hormonal system.

The exact age at which puberty begins can vary a bit from person to person, and it depends on factors like heredity, nutrition, and general health. Generally, signs of puberty may start showing a little earlier in girls than in boys, though individual variation here is normal and shouldn't be seen as a problem — this is a reassuring point for students who notice these changes starting earlier or later than their classmates.

Secondary sexual characteristics in boys and girls

All of these changes are hormone-controlled, and the age they start at can vary a little from person to person; in boys they are driven mainly by testosterone from the testes, and in girls mainly by estrogen from the ovaries.

Physical and emotional changes in adolescence

During this period, height and weight increase rapidly, which is called a growth spurt. Along with this, psychological changes are also commonly seen, such as increased emotional sensitivity, a growing influence of the peer group, more thinking about one's own identity, and a desire for independence. Understanding these changes helps both teachers and parents guide adolescents properly, since the same hormonal shifts that drive physical growth are also connected to these emotional and social changes.

Nutritional needs during adolescence

Protein

Needed in increased amounts for the rapid growth and muscle development of this stage

Calcium

Especially necessary for bone development and strength during this stage of rapid growth

Iron

Needed particularly in adolescent girls to make up for the blood loss that comes with menstruation

Balanced diet

A balanced and nutritious diet is necessary during this stage for both physical and mental development to proceed normally

Health, hygiene, and social aspects of adolescence

Because of hormonal changes, increased sweating and oily skin are common during this period, which is why adopting regular bathing and personal hygiene habits becomes important. For girls, having correct information and facilities around hygiene during menstruation matters for both health and education.

Alongside this, this stage is also socially sensitive — a growing influence of the peer group, concern about self-image, and a desire for independence in decision-making are normal psychological traits. It's a teacher's role at school to give adolescents accurate, scientific information, so they rely on trustworthy sources rather than misleading ones and can go through this stage with confidence.

Getting enough sleep and regular physical activity during this period are just as necessary as proper nutrition — the body needs adequate rest for the rapid physical development and brain maturation taking place. Support and open communication from teachers and parents help adolescents get through this period of change with confidence, in the same way that accurate, fact-based information helps them navigate the social side of these changes.

How to teach this to students

Practice questions

Frequently asked questions

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