Revision summary
Genes and hormones set tempo and a stature range. Nutrition and infection decide whether that range is reached. Altitude, toxins, and workload add environmental load. Secular trend and feeding bias are cultural-historical factors. Tanner charts make the factors visible as velocity.
Model answer
Introduction
Growth is increase in size. Development is change in proportion, maturity, and function. Both answer to genes, hormones, nutrition, disease, and the social house.
Body
Genetic and endocrine
- Polygenic stature, sex chromosomes, and syndromes such as Turner set a range.
- GH, thyroid, and sex steroids time the infant, childhood, and adolescent spurts that Tanner charted.
Nutrition and disease
- Protein-energy lack, iodine, iron, and zinc deficits stunt. Infection and diarrhoea cut velocity.
- Catch-up growth can occur if the insult ends early.
Environment and culture
- Altitude, climate, and workload shape chest and muscle. Prenatal smoking and alcohol harm.
- Secular trend: better food and sanitation raise adult height across generations.
- Gender bias in feeding, as in some Indian households, is a cultural growth factor.
- Emotion and deprivation, as in neglected children, also flatten curves.
Method note
- Longitudinal studies separate tempo from size. One school weighing cannot.
Flow diagram
flowchart TD GD[Growth development] --> GEN[Genes hormones] GD --> NUT[Nutrition infection] GD --> SOC[Care gender class]
Conclusion
Human growth is gene and hormone range filled or emptied by food, infection, altitude, and care. Anthropology watches the household as much as the endocrine axis.
Quick related
Students also ask
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Is short stature always malnutrition?
No. It may be familial, syndromic, or endocrine. Context decides.
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Does exercise stunt growth?
Moderate sport does not. Extreme energy deficit in young athletes can delay puberty.
PYQ trend
When UPSC asked this
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2022 · Q5(c) · Anthropology GS 1 · 10 marks
Stages of human pre-natal development -
2021 · Q5(a) · Anthropology GS 1 · 10 marks
Human adolescent growth spurt
More from this topic
Q5(c) · UPSC Mains 2022 · Anthropology GS 1 · 10 marks
Stages of human pre-natal development
Factors affecting growth and development
Prenatal life is germinal, embryonic, then foetal. Implantation occupies the first two weeks. Organ formation in weeks 3–8 is the main teratogen window. The foetal period is growth and maturation until birth. Nutrition and infection in each stage leave different adult traces.
Q5(a) · UPSC Mains 2021 · Anthropology GS 1 · 10 marks
Human adolescent growth spurt
Factors affecting growth and development
The adolescent growth spurt is a rapid height-weight rise at puberty. Girls peak earlier than boys on Tanner velocity curves. Hormones drive it; nutrition and class time it. Menarche follows the height peak. Human life history pairs long childhood with this late acceleration.
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