2024 · GS Paper 1 · Q7 · 10 marks

What is the concept of a 'demographic Winter'? Is the world moving towards such a situation? Elaborate.

In short

A demographic winter is a long spell of below-replacement fertility that leaves populations older and shrinking, and the world is moving towards it unevenly. The UN World Population Prospects 2024 finds more than half of all countries already below the replacement level of 2.1.

Model answer

Ghissu Editorial · Verified 4 Oct 2026

Introduction
A demographic winter is a prolonged phase of fertility below the replacement level of about 2.1, in which each generation is smaller than the last and the population ages and then shrinks.
Concept and Features
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Sub-replacement fertility

South Korea's fertility of 0.72 in 2023 was the lowest ever recorded, and in Japan deaths have outnumbered births since the mid-2000s.

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Ageing and shrinking workforce

An inverted age pyramid raises the old-age dependency ratio, causing labour shortages and strained pensions and care.

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Social roots

Late marriage, costly housing and childcare, and women's double burden of paid work and care drive the choice of fewer children.

Is the World Moving Towards It?
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Global slide

UN World Population Prospects 2024 puts global fertility near 2.25, with more than half of all countries below replacement and a population peak around the mid-2080s.

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Already in winter

China's population has fallen every year since 2022, and Italy and Spain face shrinking cohorts despite cash incentives for births.

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India approaching

Fertility fell to 2.0 in NFHS-5 (2019-21), and the UNFPA India Ageing Report 2023 projects over 20% elderly by 2050.

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Uneven spread

Sub-Saharan Africa, with fertility above four, will supply over half of world population growth to 2050.

This model answer is indicative and the model can make mistakes; please verify key facts independently.

Hand-drawn diagram: Where Countries Stand on Fertility. Where Countries Stand on Fertility. Diagram (spectrum): Where Countries Stand on Fertility; High fertility; Demographic winter; Niger; Nigeria; India; United States; Japan; South Korea
Diagram: Where Countries Stand on Fertility

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Question from the official UPSC Civil Services (Main) Examination 2024 paper. Answer written by Ghissu's engine and checked against our editorial standards. Found an error? Tell us and we correct it within 48 hours.

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