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Global Demography Overview

Jul 13, 2025

Overview

This lecture covers global demography, including the relationship between population trends and economic welfare, effects of aging and overpopulation, and debates on reproductive health policies.

Demography: Concepts and Measures

  • Demography is the statistical study of human populations, focusing on birth (fertility), death (mortality), aging, and migration.
  • Migration refers to the movement of people between different residences or regions.
  • Fertility rate is the average number of children a woman would bear in her lifetime.
  • Mortality rate is the average number of deaths within a population.
  • Population aging refers to an increasing proportion of older individuals within a population.

Importance and Effects of Demography

  • Demographic data helps governments and businesses predict and analyze social, cultural, and economic trends.
  • Family structures (size, number of children) influence economic and social policies in different regions.
  • Rural families often have more children, while urbanized, professional families tend to have fewer due to career commitments.

Urbanization, Migration, and Overpopulation

  • Less developed, agriculture-based countries tend to have higher population growth.
  • Urban population growth is driven more by migration to cities than by higher birthrates.
  • International migration helps offset aging populations in developed countries.
  • Top countries accepting immigrants in 2022 include Canada, Iceland, and New Zealand.

Debates on Population Growth and Control

  • Overpopulation is seen as a risk for economic, resource, and environmental challenges.
  • Some argue controlling population growth supports economic development and reduces poverty.
  • Historical views, like those of Thomas Malthus and Paul Ehrlich, connect overpopulation with disaster and mass starvation.
  • Population control measures include contraception, sterilization, and policies like China’s one-child policy.

Reproductive Rights and Legislation

  • Reproductive rights include the right to family planning, contraception, and the choice to terminate a pregnancy.
  • The Philippines' RH Law (RA 10354) supports responsible parenthood and reproductive health.
  • Abortion is defined as ending a pregnancy before birth; it is illegal in the Philippines.

Key Terms & Definitions

  • Demography β€” the statistical study of populations (births, deaths, migration).
  • Fertility Rate β€” average number of children per woman.
  • Mortality Rate β€” average number of deaths in a population.
  • Migration β€” movement of individuals or groups between residences.
  • Population Aging β€” increase in the proportion of elderly people in a population.
  • Reproductive Rights β€” rights related to sexual and reproductive health and choices.
  • Abortion β€” termination of pregnancy before childbirth.

Action Items / Next Steps

  • Review the effects of demographic trends on economic welfare.
  • Study the RH Law (RA 10354) and its implications for the Philippines.
  • Prepare for discussion on differing views about reproductive health policies.