Welcome, and thank you for coming to this one with an open mind.

Few questions carry as much weight as the one in the title: why is life expectancy so low in Nigeria? I have spent months pulling apart survey tables, ministry press releases and mortality models to answer it honestly, and after years of writing about Nigerian public life I can tell you the popular explanation is mostly wrong. Most people assume the figure means the average Nigerian drops dead somewhere in their mid fifties. It does not mean that. The measure itself is stranger, and sadder, than that.

Here is the number everyone quotes. Depending on which agency you trust, life expectancy at birth in Nigeria currently sits somewhere between 54.5 and 55 years, which places the country at or very near the bottom of the global table. The National Bureau of Statistics, working from its own demographic returns, is a little more generous: its demographic bulletin put the figure at 55.1 years for men and 57.2 years for women in 2022. The United Nations models put both sexes closer to 54.6. That two-year gap between Abuja and New York is not a rounding error, and I will come back to why it exists.

But hold that thought, because there is a much more important number that almost nobody prints.

A Nigerian who reaches the age of 65 can expect to live to roughly 77. Read that again. Not 55. Seventy-seven.

Both figures are true at the same time, and the distance between them is the entire story of this article.

What is the main cause of death in Nigeria today?

If you walked into a Nigerian teaching hospital expecting to find the national killers in the cardiac ward, you would be looking in the wrong place. You would need the paediatric wing, and specifically the newborn unit.

The three conditions that consistently top the estimates are malaria, neonatal disorders such as sepsis and birth asphyxia, and lower respiratory infections, which in practice means childhood pneumonia. Diarrhoeal disease presses hard on their heels and sometimes takes third place depending on which modelling year you use. Between them, these four account for close to half of all deaths recorded in the country.

Notice what is missing from that list. No cancer. No heart disease. No stroke. Those conditions exist in Nigeria in enormous numbers, but they are not what is dragging the national average down, because they mostly kill people who have already lived a good while.

What kills the average down are deaths at age nought.

Malaria remains the headline offender, and here the news is genuinely mixed rather than uniformly grim. The Federal Ministry of Health and Social Welfare announced in August 2026 that parasite prevalence had fallen from 42 per cent in 2010 to 15 per cent in the 2025 Malaria Indicator Survey. That is a real achievement built on more than 500 million treated nets distributed since 2015 and a vaccine rollout now reaching well over 700,000 children. And yet Nigeria still carries 24.3 per cent of the world’s malaria cases and 30.3 per cent of its malaria deaths. One country. Roughly a third of a global disease burden.

Rather like bailing water from a boat that is still taking it on, progress and crisis are happening simultaneously.

The neonatal picture is more stubborn. The 2024 Demographic and Health Survey showed under-five mortality falling from 132 deaths per 1,000 live births in 2018 to 110 per 1,000 in 2024, which is meaningful movement. Neonatal mortality, though, crept up from 39 to 41 per 1,000 over the same period. Roughly 45 per cent of all under-five deaths now happen in the first 28 days of life, which tells you that whatever Nigeria has fixed, it has not yet fixed the delivery room. A colleague at Guardian laid out the arithmetic of this crisis with unusual clarity late last year, comparing Nigerian infant deaths against a European country of similar total mortality, and the contrast is difficult to read without flinching.

Why do these deaths happen? Because the interventions that prevent them are cheap, well tested, and simply do not reach far enough. Antibiotics for pneumonia. Oral rehydration salts that cost less than ₦500 a sachet. A skilled attendant at delivery. A clean cord. Warmth.

The National Primary Health Care Development Agency knows this, which is why its revitalisation programme is targeting at least one functional Level 2 primary health centre in every political ward, roughly 17,600 facilities over four years. Whether that target survives contact with state-level budgets is the question everyone in the sector is quietly asking.

Why is life expectancy so low in Nigeria: the direct answer

Right. Let me answer the question plainly, because you have earned it.

Life expectancy in Nigeria is low overwhelmingly because too many Nigerians die before their fifth birthday, and a period life expectancy figure is arithmetically brutal about early deaths. When a child dies at two, that death subtracts roughly seventy unlived years from the national average. When a man dies at 78, it subtracts almost nothing. Because around one in nine Nigerian children still does not reach five, the average is hauled down from what would otherwise be a figure in the low seventies. Layered on top of that primary cause are six compounding factors: a maternal mortality burden among the worst on earth, with Nigeria accounting for roughly a third of global maternal deaths; a health system funded at about 4.2 per cent of the 2026 federal budget against the 15 per cent the Abuja Declaration committed to; out-of-pocket payments covering more than 70 per cent of health spending, which means illness and poverty feed each other directly; a workforce haemorrhage of some 16,000 doctors in five years, leaving roughly one doctor per 2,000 to 4,000 people against a World Health Organisation benchmark of one per 600; insecurity across the north that shuts clinics and blocks vaccination rounds; and a rising tide of untreated hypertension, diabetes and kidney disease that now kills Nigerians in their forties and fifties who would have survived those conditions elsewhere.

So it is not that Nigerian adults are dying young in unusual numbers, though many are. It is that the country loses an extraordinary number of people at the very beginning, and the statistic is designed to punish exactly that.

Think of it rather like calculating the average score of a football squad where a quarter of the players never get on the pitch and are recorded as zero. The squad might contain excellent players. The average will still look dreadful.

This is also why the two-year gap between the NBS figure and the UN figure matters. Nigeria’s civil registration system captures only a fraction of actual deaths, so almost every mortality number you read is modelled rather than counted. The NBS works partly from survey-based national data; the UN applies its own adjustments to the same underlying surveys. Neither is lying. They are estimating in the dark with different torches.

That said, I would not spend too much energy litigating whether the answer is 54.6 or 57.2. A country arguing over which of two catastrophic numbers is correct has already conceded the more important point.

How long do Nigerian men live compared with women?

Nigerian men live, on current estimates, around 54.3 years at birth by UN reckoning, or 55.1 by the NBS count. Women come in at roughly 54.9 and 57.2 respectively.

Now look at that gap, because it is genuinely peculiar.

In almost every country on earth, women outlive men by four to six years. It happens in Japan, in Britain, in Ghana, in Brazil. The reasons are partly biological and partly behavioural: men smoke more, drink more, drive worse, and present to doctors later. The gap is one of the most reliable findings in all of demography.

In Nigeria, by the UN’s numbers, the gap is roughly six months.

That is not because Nigerian men are unusually healthy. It is because Nigerian women are dying at rates that cancel out their natural advantage. Maternal mortality is the culprit, and the scale of it is hard to absorb: a Nigerian woman’s lifetime risk of dying in pregnancy or childbirth has been estimated at around one in twenty-two. In a wealthy country that figure is closer to one in five thousand. Every one of those deaths lands on a woman in her twenties or thirties, which is precisely the age range where a death does maximum damage to an average.

So when someone asks how long Nigerian men live, the honest answer involves a second, uncomfortable observation. Nigerian men do not live long. Nigerian women, adjusting for what biology would predict, live even less long than they should.

Beyond childbirth, the male-specific risks are the ones you would guess and a few you might not. Road traffic injuries kill a disproportionate number of young men, particularly commercial motorcycle riders in cities where a helmet is treated as optional. Occupational hazards in mining, construction and artisanal oil refining shorten lives quietly. Insecurity in the north east and the middle belt kills men of fighting age. And then there is the slow burn of untreated hypertension, which affects a startling share of Nigerian adults and which most sufferers do not know they have, because a blood pressure check is not part of ordinary life for a trader in Onitsha or a driver in Kano.

A Guardian columnist put the systemic failure behind all of this rather bluntly last year, noting that four decades of official recognition of the problem has produced remarkably little movement in the underlying indicators.

Which African country has the longest lifespan today?

Tunisia, by most current rankings, at roughly 76.7 years. Algeria follows at about 76.5, then Cabo Verde at 76.2, with Morocco and Mauritius close behind in the mid seventies.

The pattern is not subtle. The leaders cluster in North Africa and among the island states, and what they share is not oil wealth or GDP per head. Algeria has hydrocarbons; Cabo Verde has none to speak of. What they share is near-universal childhood immunisation, a functioning primary care tier that people actually use, low HIV prevalence, and public health spending that clears five per cent of GDP.

Nigeria spends about four per cent of GDP on health across public and private sectors combined, and the public share of that is small.

African life expectancy compared: the top three against the bottom two

Country	Life expectancy at birth	Female	Male
Tunisia	76.7 years	79.3 years	74.1 years
Algeria	76.5 years	77.9 years	75.1 years
Cabo Verde	76.2 years	79.4 years	73.1 years
Chad	55.2 years	57.2 years	53.4 years
Nigeria	54.6 years	54.9 years	54.3 years

Two conclusions jump out of that table. The distance between the African leader and the African laggard is roughly twenty-two years, which is wider than the gap between Nigeria and Japan was in 1960; and Nigeria is the only country in that group where the female advantage has essentially vanished, which is the maternal mortality effect showing up in cold print.

It is worth being fair to Nigeria here, because the pessimism can become lazy. Life expectancy in the country has risen from roughly 35.5 years in 1950 to nearly 55 today. That is an extra nineteen and a half years of life bought within a single lifetime, achieved through immunisation, malaria control, better nutrition and the sheer expansion of health infrastructure. Rwanda’s recovery gets deserved attention, but Nigeria’s long climb is real too.

The problem is that everyone else climbed faster. In 2019 a similar UN exercise ranked Nigeria third from bottom globally. By 2025 it was last. The country did not fall; it stood still while the field moved.

Which country has the lowest life expectancy ever recorded?

Rwanda in 1994, almost certainly, and the figures are so extreme that they take a moment to process.

During the genocide, Rwandan life expectancy at birth collapsed to somewhere between six and thirteen years depending on which dataset you consult. One widely cited series puts it at 12.16 years, with 13.33 for women and 11.41 for men, down from nearly 43 years the previous twelvemonth. Cambodia under the Khmer Rouge produced a comparable collapse, with 1975 to 1977 estimates ranging from about 12 to 19 years. Bangladesh in 1971 shows the same signature.

These are not measurements of how long people actually lived. They are what the arithmetic produces when a catastrophic share of a population dies within a single calendar year, and they exist mainly as a warning about how the statistic behaves under stress.

Which brings me back to the point I keep circling. Life expectancy at birth is a snapshot of one year’s mortality, projected forward as if nothing will ever change. It is not a prediction about your life or mine. Rwanda’s figure recovered to the sixties within twenty years, and today Rwanda is held up across the continent as a public health success story, which would have seemed a grotesque suggestion in 1995.

Nigeria’s 54.6 is not a genocide figure. It is something arguably harder to fix: an ordinary, undramatic, year-after-year accumulation of preventable deaths that never makes a headline because it never happens all at once. Two thousand three hundred children and one hundred and forty-five women, roughly, every single day. No sirens. A colleague writing on the health sector’s twenty-seven-year democratic record made this point well, observing that the problem was never simply how much money was available but whether institutions could translate money into results.

Seven practical steps that add years to a Nigerian life

Enough diagnosis. Here is what actually moves the number, at household level and at policy level, drawn from what the evidence consistently supports.

1. Sleep under a treated net, every night, all year. Free nets have been distributed by the hundreds of millions, yet household surveys keep finding them folded in cupboards or repurposed as fishing gear. A net costs the state roughly ₦3,000 to deliver and prevents an illness that can cost a family ₦40,000 in treatment and lost trading days.
2. Deliver with a skilled attendant, and plan the journey in advance. Only about half of Nigerian births are attended by skilled personnel. Decide before the eighth month which facility you will use, how you will get there at two in the morning, and who holds the transport money, because the emergency is not the moment to negotiate a taxi fare.
3. Complete the full childhood immunisation schedule rather than the convenient half of it. The critical window runs from birth to fifteen months, and a partially vaccinated child carries most of the risk of an unvaccinated one. Ward-level primary health centres provide these at no charge.
4. Keep oral rehydration salts and zinc in the house permanently. Diarrhoeal disease kills through dehydration, not through the infection itself, and a sachet costing a few hundred naira prevents the great majority of those deaths if given within hours. Treat it as you would treat matches or a torch.
5. Get a blood pressure reading twice a year from the age of thirty. Pharmacies across Nigeria now offer this for ₦500 to ₦1,500, and hypertension is entirely symptomless until the stroke arrives. A reading consistently above 140 over 90 warrants a clinic visit, not a wait.
6. Enrol in a health insurance scheme, however modest. Out-of-pocket payment covers over 70 per cent of Nigerian health spending, which is the mechanism by which one illness turns a working family into a poor one. State schemes under the National Health Insurance Authority now start at a few thousand naira per year in several states.
7. Push for ward-level accountability on the primary health centre nearest you. The target is one functional facility per ward with staff, power and stock. Ask at community meetings whether yours has a midwife on the night shift, and keep asking, because these facilities improve when someone local is counting.

None of these are exotic. That is precisely the tragedy of the numbers in this article.

Final Thoughts on Why Life Expectancy Is So Low in Nigeria

If you take one idea away from these several thousand words, make it this: the figure of 54.6 years describes a country that loses too many children, not a country where adults die at 54.

That distinction is not academic comfort. It changes what you do about it. A country where adults were dying in their mid fifties would need cardiology units, cancer centres and dialysis machines at enormous cost. A country losing children to malaria, sepsis, pneumonia and dehydration needs nets, midwives, antibiotics, clean water and a working clinic within walking distance of every ward, and needs them at a fraction of the price.

Nigeria already knows this. The plans exist, the surveys are conducted, the targets are published. Malaria prevalence really has fallen from 42 per cent to 15. Under-five mortality really has come down from 132 to 110 per 1,000 in six years. The machinery is not broken so much as underfunded and inconsistently switched on.

So what do you do with all this? Three things. Protect the children in your own household with the cheap interventions listed above, because the aggregate figure is nothing more than millions of individual households summed. Take your own middle years seriously with a blood pressure cuff and an insurance card, because the adult mortality picture is quietly worsening even as the child one improves. And when a politician campaigns in your ward, ask about the primary health centre rather than the road, because one of those two things is keeping people alive.

Nigeria’s life expectancy has climbed nineteen years since 1950. There is no law of nature saying the next nineteen must take as long.

• Judge the health of your community by whether its clinic has a midwife on nights, not by the national statistic
• The cheapest interventions carry the heaviest mortality burden, so start with nets, immunisation and rehydration salts
• Adults should not assume the figure applies to them, but should not ignore hypertension either

Related Articles

If you want the mortality picture in more forensic detail, my earlier piece on the specific conditions that kill most Nigerians breaks down the top ten causes and explains why the rankings shift between modelling years. And because almost every health outcome in this article traces back to household economics, you may find my analysis of who sits at the bottom of the national income distribution a useful companion, particularly on how out-of-pocket medical costs push families under the poverty line.

Key Takeaways

• Life expectancy at birth in Nigeria sits at roughly 54.6 years, but a Nigerian reaching 65 can expect to live to about 77
• Child mortality is the dominant cause of the low figure, with around 45 per cent of under-five deaths occurring in the first month of life
• Nigeria’s near-absent gender gap in lifespan is a direct signature of one of the world’s heaviest maternal mortality burdens

Frequently Asked Questions About Why Life Expectancy Is So Low in Nigeria

Why is life expectancy so low in Nigeria?

Life expectancy is low chiefly because a large share of Nigerians die in early childhood, and the statistic subtracts around seventy unlived years for every child lost. Weak primary care, high maternal mortality, low health funding and insecurity all compound that primary effect.

What is the current life expectancy figure for Nigeria?

United Nations estimates place it at roughly 54.6 years for both sexes combined in 2026, which ranks at or near the bottom globally. The National Bureau of Statistics reports slightly higher figures of 55.1 years for men and 57.2 for women, reflecting different modelling adjustments.

Does the figure mean most Nigerians die at 55?

No, and this is the most common misreading of the statistic. Life expectancy at birth is an average pulled down sharply by deaths in infancy, which is why a Nigerian who survives to 65 can still expect to reach roughly 77.

What is the main cause of death in Nigeria?

Malaria and neonatal disorders such as sepsis and birth asphyxia trade places at the top depending on the modelling year, each accounting for roughly twelve to fourteen per cent of deaths. Lower respiratory infections and diarrhoeal disease follow closely behind them.

How long do Nigerian men live?

Nigerian men have a life expectancy at birth of about 54.3 years by United Nations estimates, or 55.1 years according to National Bureau of Statistics figures. Road injuries, occupational hazards, insecurity and untreated hypertension are the main adult risks specific to men.

Why is the gap between Nigerian men and women so small?

Globally women outlive men by four to six years, but in Nigeria the gap is around six months. Maternal mortality kills women in their twenties and thirties at a rate that cancels out the biological advantage women normally hold.

Which African country has the longest lifespan?

Tunisia currently leads Africa at roughly 76.7 years, followed closely by Algeria at about 76.5 and Cabo Verde at 76.2. High immunisation coverage, functioning primary care and health spending above five per cent of GDP explain the difference rather than raw national wealth.

Which country has the lowest life expectancy ever?

Rwanda in 1994 recorded the lowest figure ever measured, with estimates ranging from six to about thirteen years during the genocide. Cambodia under the Khmer Rouge produced comparable collapses, with 1975 to 1977 estimates falling between roughly twelve and nineteen years.

Is Nigeria’s life expectancy improving?

Yes, though slowly and more slowly than most comparable countries. The figure has risen from about 35.5 years in 1950 to nearly 55 today, but Nigeria slipped from third lowest globally in 2019 to last by 2025 because other nations improved faster.

How much does Nigeria spend on healthcare?

The 2026 federal budget allocated roughly ₦2.48 trillion to health out of ₦58.47 trillion, about 4.2 per cent of total spending. That falls well short of the 15 per cent target African governments committed to under the Abuja Declaration in 2001.

What has happened to malaria in Nigeria recently?

Parasite prevalence fell from 42 per cent in 2010 to 15 per cent in the 2025 Malaria Indicator Survey, supported by mass net distribution and a phased vaccine rollout. Nigeria nonetheless still accounts for 24.3 per cent of global malaria cases and 30.3 per cent of malaria deaths.

What single action would raise Nigerian life expectancy fastest?

Ensuring a skilled attendant at every birth would move the figure faster than any other single measure, since around 45 per cent of under-five deaths occur within the first 28 days. Only about half of Nigerian births currently have skilled personnel present.