Growth, Development and Adolescent Health
Growth is a measurable increase in size or weight; development is a qualitative change in function and skill. The SSC paper tests the stages of life, the hormonal basis of puberty, the secondary sexual characteristics, and the health risks specific to adolescents.
Stages of development
Infancy (0–2 years), childhood (3–11), adolescence (10–19 years according to WHO), and adulthood. Development is described as physical, mental, social and emotional.
Puberty
Girls begin around 10–14 years and boys around 12–16. The pituitary gland increases growth hormone, and the gonads secrete oestrogen and testosterone. Changes include a growth spurt, appearance of secondary sexual characteristics, menarche in girls, voice deepening and facial hair in boys, and increased sebaceous activity causing acne.
Adolescent health concerns
Iron-deficiency anaemia, especially in girls; undernutrition and obesity together; substance abuse; screen addiction and poor sleep; peer pressure; examination stress and mental health; early marriage and reproductive tract infections. Government responses include the Rashtriya Kishor Swasthya Karyakram, adolescent-friendly health clinics and weekly iron-folic acid supplementation in schools.
Worked example
A 13-year-old girl is taller than a 14-year-old boy in the same class. Reasoning: the girls' growth spurt starts about two years earlier, so she is at her peak height velocity while he has not yet begun his. Boys later catch up and finish taller on average. This is normal variation, not a growth disorder, so the correct answer is reassurance and continued monitoring.
Traps that cost marks
- Defining adolescence as 13–19 years instead of 10–19.
- Treating growth and development as synonyms.
- Labelling early or late maturation as abnormal.
- Ignoring emotional and social changes while listing only physical ones.