Population - The Increasing Numbers and Rising Problems

15.1 Rising Population — A Global Threat

• The rapid explosion of population is one of the most severe problems currently facing developing nations, including India.
• It represents a grave threat to the entire world, and all forms of mass media (radio, television, press) are being actively utilized to educate people about its dangers.

15.2 World Population Through the Ages

• Around 50,000 years ago, the global human population was merely about one million. Early humans lived primitive lives in caves and hunted for survival.
• Tool-Making Revolution (Stone Age): The invention of stone tools significantly improved human survival against wild animals and aided in hunting.
• Agricultural Revolution: Approximately 10,000 years ago, humans began forming settled communities, domesticating animals (starting with the dog), and sowing crops. This era also marked the transition from stone to metal tools (bronze and iron), leading to faster population growth.

15.3 Rapid Rise in Population

• Industrial Revolution: Starting in the 17th century, scientific and industrial advancements provided greater comfort and increased food production. However, early close-contact living led to widespread infectious diseases.
• New Discoveries in Medical Science: The 20th century witnessed remarkable medical breakthroughs, particularly antibiotics and prophylactic vaccinations. This drastically reduced mortality across all age groups, allowing more individuals to reach reproductive age and causing the population to rise rapidly.

15.4 Population Explosion — A Serious Global Concern

• Population explosion refers to the massive and rapid increase in the world's population over the last few centuries, heavily concentrated in developing nations. India and China account for one-third of the global population.
• Six Main Reasons for Sharp Rise in World Population:
  1. Better health care facilities for all age groups.
  2. Fewer deaths due to extensive medical aid and successful disease control.
  3. Minimized food shortages due to the Green Revolution.
  4. Improved nutrition, leading to healthier and longer lives.
  5. Large scale immunisation against fatal diseases.
  6. Fewer infant deaths due to safe maternity care.
• India-Specific Causes for Population Rise: These include illiteracy, traditional beliefs, economic reasons (children seen as helping hands), religious and social customs, intense desire for a male child, and lack of recreational facilities.

15.5 A Highly Simplified Model of Population Growth

• A mathematical model illustrates that if 10 couples have an average of 4 children each, and succeeding generations do the same, the population multiplies ten times in just 60 years.
• Due to this unchecked momentum, India has already overtaken China as of April 2024 to become the most populous country in the world.
• Consequences of Unchecked Growth: Shrinking open spaces and forests, severe air/water/soil pollution, and intense shortages of drinking water and other resources.

15.8 Rising Population — Pressure on Natural Resources

• Food Mismatch: Population increases in a geometrical progression (1, 2, 4, 8, 16...), whereas food production rises only in an arithmetical progression (1, 2, 3, 4, 5...). This guarantees future food shortages if unchecked.
• Water Scarcity: Clean drinking water is becoming extremely scarce due to overconsumption and widespread pollution of rivers and ponds.
• Land Depletion: Usable land is shrinking as it is converted into residential colonies, factories, and extensive agricultural plots.
• Forest Degradation: Deforestation for timber and housing leads to disastrous outcomes like droughts, flash floods, soil erosion, wildlife extinction, and global warming. Forests are crucial for oxygen, rain, and climate stability.
• Energy Crisis: Conventional fossil fuels (coal and petroleum) are depleting rapidly. There is a vital need to shift toward non-conventional sources like solar energy (solar cookers/batteries) and biogas.
• Mineral Exhaustion: Non-renewable resources like iron and copper are being aggressively utilized by expanding industries and transportation networks.

15.9 Population Growth and Urbanisation Causing Serious Pressure

• Urbanisation: The rapid transformation of villages into megacities requires massive infrastructure (buildings, highways, airports), encroaching on both agricultural lands and forests.
• Rising Living Standards: Modern households consume vastly more goods (electronics, vehicles, clothing), accelerating the depletion of natural resources.
• Sustainable Development: This is defined as meeting present needs without compromising the ability of future generations to meet theirs. It is achieved through the 3 Rs: Reduction of excessive use, Recycling/reusing wherever possible, and relying on Renewable resources (solar/wind energy).

15.10 Rate of Population Growth Must be Reduced

• Reducing population growth is essential for lessening the burden on resources and ensuring better healthcare and education for all.
• Key Statistical Terms:
  • Demography: The statistical study of human population size, density, and distribution.
  • Population Density: The number of individuals living per square kilometre at a given time.
  • Birth rate (Natality): The number of live births per 1000 people of population per year.
  • Death rate (Mortality): The number of deaths per 1000 people of population per year.
  • Growth rate: The statistical difference between the birth rate and the death rate.

15.11 Need for Adopting Control Measures

• When population density crosses a threshold, severe problems arise: per capita income plummets, essential natural resources dramatically decrease, and overall public health deteriorates. Control measures are necessary to maintain the quality of life.

15.12 Population Education and Population Control

• Mass awareness campaigns are needed, even in remote areas, to teach the advantages of small families and the drawbacks of having many children.
• Orthodox societal views, particularly the insistence on having a male heir, must be actively changed through education.
• Legal marriage age restrictions (18 years for girls and 21 years for boys in India) must be strictly enforced.
• Couples must be educated to delay their first child, maintain a proper interval before the second, and utilize family planning to prevent unwanted pregnancies.

15.13 Methods of Contraception

• Family Welfare: Symbolized by an inverted red triangle in India. It focuses on family planning (small family size), dietary nutrition of mother and child, and subsequent care (immunisation and oral rehydration therapy).
• Hormonal Methods (Pills): Oral contraceptive tablets that alter hormonal balances to prevent the release of the egg from the ovary.
• Barrier Methods:
  • Condoms: Latex sheaths used by men to prevent sperm deposition in the vagina.
  • Diaphragms: Latex caps fitted deep over the female cervix to block sperm entry.
  • Spermicidal agents: Chemicals placed in the vagina that kill sperm upon contact.
• Intra-Uterine Devices (IUDs): Devices like Copper-T and Lippe's Loop fitted inside the uterus. They do not stop fertilisation but effectively prevent the implantation of the embryo.
• Surgical Methods (Permanent):
  • Tubectomy (Females): The abdomen is opened, and the fallopian tubes are cut and tied with nylon thread, blocking the passage of eggs.
  • Vasectomy (Males): A small cut in the scrotum allows the vas deferens to be cut and tied, blocking sperm from entering the semen. This procedure is comparatively easier, quicker, and safer than tubectomy.

15.14 Induced Abortion or Medical Termination of Pregnancy (MTP)

• MTP is a procedure to legally end a pregnancy. It is recommended primarily when there is definite evidence of a serious genetic disease in the embryo or if an unwanted pregnancy occurs.
• Legally, it is permitted only within the first 5 months of pregnancy and must exclusively be performed by trained medical professionals in a hospital environment.