Demographics & Society · March 2026

From Too Many to Too Few: How India Quietly Stopped Worrying About Its Population — and Started Worrying About Something Else

For decades, India was told its greatest threat was too many people. Now its fertility rate has dropped below the level needed to replace the population. The country that once sterilised millions in a panic is now debating whether it has enough children. The story of how that happened is more complicated — and more human — than either alarm would suggest.

There is a photograph that circulates occasionally in Indian demographic circles — grainy, black-and-white, dated somewhere in the mid-1970s. It shows a government camp in rural north India: a row of cots, men lying still, and a banner overhead that reads, in Hindi, “Small Family, Happy Family.” The men had just undergone vasectomies. Some came voluntarily, drawn by the offer of cash and a transistor radio. Others, by numerous accounts, did not come entirely of their own choosing.

That photograph belongs to one of the most troubling episodes in post-independence India — the forced sterilisation drives of the Emergency years, 1975 to 1977. Men and women in certain states were rounded up, pressured, or incentivised into permanent sterilisation. The government tracked numbers. It handed out prizes to districts with the highest “couple protection rates.” It treated human reproduction as a logistical problem to be solved by a determined administration.

Half a century later, India’s problem looks completely different. The country’s total fertility rate — the average number of children a woman has in her lifetime — has fallen to 1.9. That number sits below 2.1, which is the replacement rate, the minimum needed for a population to sustain itself across generations without immigration. India is, in other words, no longer producing enough children to replace itself. The country that once panicked about too many babies is now, in certain circles, beginning to quietly panic about too few.

How did this happen? And what does it mean? Two recent publications — a reflective essay by Bangladeshi public health leader Mushtaque Chowdhury, and a population projection report by the International Institute of Migration and Development and the Population Foundation — offer complementary answers. Together, they trace one of the most consequential and least understood policy journeys in modern Indian history.

I. The Bomb That Wasn’t

To understand where India’s population anxiety came from, you have to travel back to 1968 and a book called The Population Bomb, written by Stanford biologist Paul Ehrlich. The book was a bestseller of a particular kind: urgent, terrifying, and, as it turned out, mostly wrong.

Ehrlich painted apocalyptic scenes of a “population tsunami” in developing countries — mass starvation, social collapse, civilisational overload. The book terrified Western policymakers. It also gave intellectual cover to those who believed the solution lay in controlling the reproduction of people in poorer nations — a project that Western governments and foundations were willing to fund generously, as long as other countries bore its consequences.

In India, this agenda found a willing champion in Sripati Chandrasekhar, a demographer and sociologist who served as the country’s health minister in 1967. Chandrasekhar established a full department of family planning, pushed a “cafeteria approach” to fertility control — offering a menu of contraceptive options to women — and launched sterilisation drives across the country. He raised the legal age of marriage. He persuaded Parliament. He built a bureaucratic apparatus whose entire purpose was to reduce the number of Indians being born.

During the Emergency of 1975 to 1977, sterilisation targets were set at the district level and passed down through the bureaucracy like production quotas in a factory. States competed for awards. Officials cut corners, used pressure, and looked away when consent was not freely given. In some states, men were told they could not receive government services — ration cards, land records, loans — without being sterilised. The numbers were, by official count, impressive. The human cost was vast and unevenly borne, falling most heavily on the poor, the rural, and those with the least power to refuse.

II. The Study That Was Too Good to Be True

While Ehrlich was writing his ‘bomb’, something quieter and more careful was being done in Khanna, a village in Punjab. A team from Harvard University, funded by the Rockefeller Foundation, had been running one of the world’s first large-scale family planning trials: offering contraceptive advice and supplies to married women, tracking uptake and birth rates over years. The results looked remarkable. High rates of “acceptance” among participants. The study became a landmark in global family planning advocacy, cited in journals and in donor reports.

There was just one problem. Acceptance and practice turned out to be very different things. The birth rates in Khanna didn’t change.

An anthropologist named Mahmood Mamdani — whose son, recently became the Mayor of New York — went back to Khanna and asked a simpler question: why did families who said yes to contraception keep having children? The answer he found was not ignorance or indifference. It was calculation. Poor farming families in Punjab needed children — to work the land, to support parents in old age, to offset the near-certainty that some children would not survive to adulthood. Children were not a problem to be solved. They were a rational economic response to a life with no other safety net.

Mamdani’s finding pointed to something that Western-funded family planning programmes were structurally unable to see: you cannot change fertility rates by distributing contraceptives to people whose lives make large families entirely sensible. The change has to come from somewhere deeper — from economic security, from the education of girls, from falling infant mortality, from a world in which a family can afford to have fewer children because it trusts that the ones it has will survive.

III. “Development Is the Best Contraceptive”

In 1974, India’s health minister at the time, Karan Singh, stood at the World Population Conference in Bucharest, Romania, and said something that became one of the most quoted lines in the history of global demography: “Development is the best contraceptive.“

It was a rebuke to the Western population-control agenda — a statement that poor countries’ birth rates would fall not through coercion or external pressure but through the same process that had already driven birth rates down in the West: education, healthcare, women’s economic participation, and rising living standards. India, Singh was saying, did not have a population problem. It had a poverty problem. Solve the second and the first would take care of itself.

The proof came from India’s own south. Kerala, Tamil Nadu, Andhra Pradesh, and Karnataka — states that invested heavily in female literacy, infant healthcare, and economic development — all saw their birth rates collapse without any coercive intervention. Kerala reached replacement fertility in 1988, when the national average was still a child-per-woman higher. Tamil Nadu followed in 1993. Today, Maharashtra’s fertility rate is lower than Norway’s.

The contrast with northern states — which won national awards for high “couple protection rates” while continuing to show stubbornly elevated birth rates — was stark. Handing out contraceptives had not worked. Sending girls to school had.

IV. The Numbers Now

India’s national TFR today stands at 1.9 — below the replacement rate of 2.1 for the first time in recorded history. The country’s fertility fell from nearly five children per woman at independence, to around three in the 1990s, to under two today. The number of babies born in India annually peaked at around 29 million at the turn of the millennium and has been falling since.

But these national figures hide a fault line that is shaping Indian politics with increasing intensity. The southern states — Kerala, Tamil Nadu, Karnataka, Andhra Pradesh, Telangana — have had below-replacement fertility for decades. Their populations are ageing, their workforces are shrinking, and their governments are already thinking about how to support growing numbers of elderly residents. Andhra Pradesh’s Chief Minister N. Chandrababu Naidu recently announced his government is exploring a law to incentivise families to have more children — a striking position in a country that spent decades doing the opposite.

The northern states — Bihar, Uttar Pradesh, Jharkhand, Madhya Pradesh — still have TFRs above 2.5 in rural areas. Their populations are younger, their workforces are still growing, and they contribute disproportionately to India’s national headcount. Under the current system of parliamentary representation, seats are allocated based on population. When the delimitation exercise — the redrawing of constituency boundaries — eventually happens, states that kept their birth rates high will gain seats. States that reduced theirs will lose them. The south, which did what the national family planning programme asked, may be politically penalised for its success. It is perhaps the most perverse incentive structure in Indian democratic history.

V. The Ageing Country in Waiting

A projection report by the International Institute of Migration and Development and the Population Foundation, led by demographers S. Irudaya Rajan and J. Retnakumar, maps what India’s population will look like between now and 2051. The picture it draws is not of explosion or collapse, but of a slow, structural transformation whose consequences will be felt in every sector of public life.

India’s population will continue to grow — from 1.36 billion in 2021 to approximately 1.59 billion in 2051 — but the pace slows sharply. The annual growth rate of 0.5 percent is about a third of what it was during the high-fertility decades.

More importantly, the composition changes radically. The share of children in India’s population — already halved from 40 percent in the 1960s to 20 percent today — will continue to fall. The share of people over 60 will nearly double, reaching over 20 percent of the population by 2050. In Kerala alone, the elderly will constitute 25 percent of the state’s population by 2036.

India’s working-age population is expected to keep growing until 2041, which means the demographic dividend — the economic advantage of having more workers than dependents — is still available to harvest. But it will not wait indefinitely. The window is open. It will not stay that way.

The challenge is compounded by technology. Artificial intelligence and automation are eliminating the kinds of jobs — routine manufacturing, data processing, basic administrative work — that countries at India’s stage of development have historically used to absorb large numbers of young workers and generate the savings that fund industrialisation.

The jobs that automation cannot easily replace are in human-facing services: healthcare, teaching, social work, elder care. These are precisely the sectors where India’s growing elderly population will create the greatest demand. The demographic and technological challenges, read together, point to the same answer: invest in training a large health and care workforce.

VI. What the Policy Should Look Like Now

For most of independent India’s history, population policy meant one thing: getting the numbers down. The language of “couple protection rates,” of targets, of “cafeteria approaches” to contraception — all of it was oriented toward subtraction. The success of that project, paradoxically, has now made it obsolete. India no longer needs to reduce its birth rate. It needs to manage the consequences of a birth rate that has already fallen — and fallen faster, in some places, than anyone planned for.

What this means in practice is a shift in the entire purpose of population-related policy — from controlling numbers to improving the quality of life of the people who exist. This involves several things that India has historically underinvested in.

There is also the question of ecology — one that both publications flag and that rarely enters the demographic debate in India. Even a slower-growing population of 1.59 billion people places enormous demands on land, water, food, and energy.

The pressure on natural ecosystems — the forests, wetlands, and wild corridors that buffer human settlements from the microbes and climate shifts beyond them — does not diminish simply because birth rates have fallen. The absolute number still matters.

There is a particular kind of historical irony in the fact that Singapore and South Korea— two of the Asian economies that most aggressively pursued population control programmes in the 1970s and 80s — are now paying couples cash bonuses to have more children. The incentives have simply reversed. The anxiety has simply reversed. The bureaucratic apparatus that once tracked how many people could be prevented from being born now tracks how many can be encouraged into existence.

India is not at that point yet, and may never reach it at the national level. Its demography is too large and too uneven for a single policy lever to work everywhere. But the direction of travel is clear: the old language of the population bomb — of targets and drives and “protection rates” — belongs to a chapter that is now closed.

The question now is not how many Indians there will be, but what kind of country those Indians will grow old in.