Population Explosion, Demographic Trends in India, and Control Measures

DEFINITION OF POPULATION EXPLOSION

"Preventive medicine is currently faced with the problem of 'population explosion' in developing countries where population overgrowth is causing social, economic, political and environmental problems. This is another kind of prevention - prevention of a problem that demands a mass attack, if its benefits are to accrue in the present and succeeding generations."

• Park's Textbook of Preventive & Social Medicine, p. 12

THE DEMOGRAPHIC CYCLE (Background to Understanding Population Explosion)

DEMOGRAPHIC TRENDS IN INDIA

1. Population Size and Growth

• With only 2.4% of the world's land area, India supports ~17.5% of the world's population
• India is projected to surpass China as the most populous country around 2027
• At the current annual growth rate of 1.2%, India's population will double in ~30 years

2. Demographic Profile (Key Indicators - 2020)

• a. Large population base
• b. High fertility (high birth rate and large family size)
• c. Low or declining mortality
• d. "Young" population (~28% below age 15 years)
• e. High illiteracy (~34.62%) - explains slow decline in birth rate
• f. High dependency ratio of 50.5% (every economically productive member supports ~1 dependent)

3. Mortality Profile

• Death rate declined from 21 (1965) to 6.0 (2020)
• Life expectancy at birth: 67 years for males, 70 years for females (2020)
• Infant Mortality Rate (IMR): 32 per 1,000 live births (still high vs. 5 in developed countries)
• Life expectancy lags ~12-15 years behind developed countries
• Significant improvement in communicable disease mortality (cholera, TB, malaria)

4. Fertility Profile

• Crude Birth Rate fell from 31 (1990) to 20 (2020)
• Total Fertility Rate (TFR) has been declining, but remains above replacement level in several states
• National Family Health Survey data shows wide interstate variation - southern states have near-replacement TFR; states like Bihar, UP, Rajasthan, and MP have high fertility rates ("BIMARU" states)

5. Age-Sex Structure

• Largest age groups: 15-24 years (10.2-10.8%), 20-24 years being the most
• This "youth bulge" carries both opportunity (demographic dividend) and challenge (employment, resources)

6. Urban-Rural Distribution

• 66.5% rural, 33.5% urban (2017)
• Rapid urbanization is occurring due to rural-to-urban migration

7. Sex Ratio Concerns

• Overall sex ratio: 899 females per 1,000 males - reflecting son preference, female foeticide, and maternal deaths
• Child sex ratio (0-6 years) is even more skewed, signalling sex-selective abortion

MEASURES FOR CONTROL OF POPULATION EXPLOSION

A. Legislative / Policy Measures

1. National Population Policy (NPP 2000) - The Government of India's latest and most comprehensive policy:
   • Reaffirms target-free approach and voluntary, informed choice in family planning
   • Aims to reduce TFR to replacement level
   • Long-term goal: population stabilization aligned with economic growth, social development, and environmental protection
2. Age of Marriage Laws: The first NPP (1976) raised minimum legal age of marriage to 18 years for females and 21 years for males - later revised in 2021
3. 42nd Constitutional Amendment: Made "Population Control and Family Planning" a concurrent subject under the constitution
4. National Socio-Demographic Goals (NPP 2000) include:
   • Free and compulsory school education up to age 14
   • Reduce IMR to below 30 per 1,000 live births
   • Reduce MMR to below 100 per 1,00,000 live births
   • Universal immunization of children
   • Promote delayed marriage for girls (not before 18, preferably after 20)
   • 80% institutional deliveries; 100% deliveries by trained persons
   • Universal access to contraception with a wide basket of choices
   • 100% registration of births, deaths, marriages, and pregnancies
   • Vigorously promote the small family norm

B. Family Planning / Contraceptive Services

1. Barrier Methods - condom (NIRODH), diaphragm, cervical cap, spermicides
2. Intra-Uterine Devices (IUDs) - Cu-T, multiload Cu-375
3. Hormonal Methods - oral contraceptive pills (combined/progestogen-only), injectables (DMPA), implants
4. Post-conceptional Methods - emergency contraception, MTP (Medical Termination of Pregnancy Act 1971)
5. Natural/Miscellaneous - periodic abstinence, LAM (Lactational Amenorrhoea Method)

1. Male Sterilization - vasectomy (no-scalpel vasectomy is the preferred technique)
2. Female Sterilization - tubectomy (laparoscopic, minilaparotomy)

Note: Sterilization accounts for over 60% of effectively protected couples in India. A Couple Protection Rate (CPR) exceeding 60% is needed to achieve NRR = 1.

C. Education and Social Measures

1. Female education: Literacy and education of women is the single most powerful determinant of fertility decline. Educated women marry later, have fewer children, and seek health care more effectively
2. Raising the age of marriage: Delays the first pregnancy, reduces total reproductive span, reduces teenage pregnancies
3. Mass media and IEC (Information, Education, Communication): Door-to-door campaigns, radio, TV, newspapers promoting the small family norm - "Hum Do Hamare Do" (We Two, Our Two)
4. Anganwadi workers, ASHAs, and ANMs: Frontline workers delivering family planning counselling at the community level
5. Integration of family planning with MCH (Mother and Child Health) services

D. Economic Incentives and Disincentives

1. Cash incentives for sterilization (particularly for Below Poverty Line families)
2. Institutional delivery incentives under Janani Suraksha Yojana (JSY)
3. Withholding certain government benefits for families with more than 2 children (in some states)
4. Incentives for women who delay first pregnancy and maintain birth spacing

E. Health Service Strengthening

1. Reducing infant and child mortality: The demographic transition theory shows that when parents are confident their children will survive, they have fewer children. IMR reduction is therefore a prerequisite for birth rate reduction
2. Improving maternal health: Safe motherhood, antenatal care, skilled birth attendance
3. Comprehensive reproductive health care: Including management of RTIs/STIs, adolescent health services, post-abortion care

F. The "Cafeteria Approach"

G. Involvement of Men

H. Addressing Social Determinants

• Urbanization and industrialization: Historically associated with fertility decline
• Empowerment of women: Economic independence, property rights, decision-making within families
• NGO collaboration: Community-based distribution of contraceptives, reaching underserved groups (urban slums, tribal populations, migrants)
• Integrating ISM (Indian Systems of Medicine): For reproductive and child health services at the household level

SUMMARY (SPM Key Points)

The classic Park's slogan guiding the family welfare programme: "Delay the first, postpone the second and prevent the third" - referring to pregnancies.

• Park's Textbook of Preventive and Social Medicine, Chapter 10 (Demography), Chapter on National Family Welfare Programme