Nigerians are not getting enough sleep 

By Victor TalksHealth

The generator starts at 11 p.m. and runs until 5 a.m. Traffic begins before 6 a.m. The night shift ends at 7 a.m. and the day shift starts at 8 a.m. for tens of millions of Nigerians in Lagos, Abuja, Port Harcourt, and Kano. These are not inconveniences, they are the reason sleep has become a health crisis hiding in plain sight.

Raymond Nwachukwu, a civil servant who lives in the Ijaiye area of Lagos and commutes daily to Lekki, describes his relationship with sleep simply. There are occasions, he says, when he gets home at midnight and wakes up by 4 a.m. to begin the journey back. That is four hours, on a good night. On bad nights it is less. He has been doing this for three years. He does not think of it as a health problem. He thinks of it as Lagos.

Raymond is not unusual. He is the norm. Lagos was ranked the city with the worst traffic in the world in the Numbeo 2024 global traffic index. The average Lagos resident loses hours of potential rest time to road congestion alone. Add to that the near-universal background noise of petrol and diesel generators running through the night, the noise of neighbours, markets, and religious gatherings, the demands of shift work in hospitals, factories, and security services, and the economic pressure to work multiple jobs, and a picture emerges of a country that has silently accumulated an enormous national sleep debt with almost no public conversation about the consequences.

What Happens to Your Body When You Do Not Sleep Enough

Sleep is not passive. While you sleep, your body is performing essential maintenance that cannot be done any other way. Your brain consolidates memories and flushes out metabolic waste products, including some linked to dementia. Your immune system produces and releases cytokines, proteins that fight infection and inflammation. Your heart rate and blood pressure drop, giving your cardiovascular system its only daily period of rest. Your body regulates blood sugar, manages hormones, and repairs tissue.

When sleep is consistently cut short or disrupted, all of this maintenance is incomplete. The consequences accumulate over time into conditions that are now well established in medical literature: high blood pressure, heart disease, obesity, type 2 diabetes, kidney disease, weakened immunity, depression, anxiety, cognitive decline, poor memory, impaired judgment, and increased risk of accidents and medical errors.

A 2024 Harvard University study that analyzed the deaths of almost one million people across five US states found a direct link between cardiovascular disease mortality and exposure to environmental noise, particularly at night.

The mechanism is well understood: noise activates the sympathetic nervous system even during sleep, triggering the release of stress hormones. The body cannot fully rest in a noisy environment regardless of how long you stay in bed. You can sleep for eight hours in a room with a running generator and wake up with your blood pressure elevated and your cortisol already raised, as if you had barely slept at all.

What Chronic Sleep Deprivation Does To The Body Over Time

1) High blood pressure: stress hormones released by noise exposure during sleep chronically elevate blood pressure, a key driver of stroke and heart attack.

2) Heart disease: the heart never gets its nightly rest period, increasing long-term cardiovascular strain.

3) Obesity: Sleep deprivation disrupts hunger hormones, increasing cravings for high-calorie foods and reducing the feeling of fullness.

4) Type 2 diabetes: poor sleep impairs insulin sensitivity and blood sugar regulation even in people without diabetes.

5) Weakened immunity: the immune system produces fewer protective cells during disrupted sleep, making infections harder to fight.

6) Depression and anxiety: Chronic sleep deprivation is both a cause and a consequence of mental health conditions, creating a reinforcing cycle

7) Cognitive decline and poor memory: the brain cannot consolidate learning or clear metabolic waste during disrupted sleep.

8) Increased risk of road accidents: Drowsy driving causes thousands of accidents every year, particularly among long-distance commuters and shift workers

The Generator Problem

Nigeria’s electricity grid supplies reliable power to a minority of urban residents. For the rest, daily life is organized around the petrol or diesel generator, which runs when grid power is unavailable, which is often most of the night. This has created an acoustic environment at night in Nigerian cities that has no equivalent in most of the world.

A standard domestic generator in Nigeria operates at between 70 and 90 decibels, depending on its size and proximity to sleeping areas. The World Health Organization recommends that nighttime environmental noise should not exceed 40 decibels outside windows and should be below 30 decibels in bedrooms.

The Lagos State Environmental Protection Agency stated in April 2026 that residential nighttime noise should not exceed 55 decibels. Nigerian generator noise routinely exceeds all of these thresholds by a significant margin.

Research on noise-induced sleep disruption is unambiguous.

Intermittent noise, the kind a generator makes when it surges and settles, is more damaging to sleep than continuous noise. It specifically reduces the time spent in slow-wave sleep, which is the deepest and most restorative stage. The most important finding from field research is that this effect does not habituate. You do not get used to it.

People who have lived near traffic noise or generators for years still show the same sleep stage disruptions as those newly exposed. The body keeps responding to the noise as a threat, year after year, even when the conscious mind no longer notices it.

Noise Levels That Affect Sleep In Nigerian Cities

1) WHO recommended maximum nighttime noise: 40 decibels outside, 30 decibels inside the bedroom.

2) Lagos State Environmental Protection Agency limit for residential nighttime noise: 55 decibels.

3) Standard domestic petrol generator in Nigeria: 70 to 90 decibels, depending on model and proximity.

4) Heavy traffic on a Nigerian expressway: 80 to 95 decibels

5) Mosquito coil or plug-in repellent: largely silent. The generator is running it: not.

6) Every 10-decibel increase in noise represents a tenfold increase in sound intensity to the human ear.

At 70 decibels (a typical generator level), the probability of sleep disruption and reduced deep sleep is very high, even if the sleeper does not fully wake.

Chronic exposure to noise during sleep has been directly linked to hypertension and cardiovascular mortality in large-scale population studies.

Traffic and the Commute That Eats Sleep

In Lagos.

The combination of urban density, inadequate road infrastructure, and a public transport system that cannot meet demand has produced commute times that are among the longest in the world.

A resident living on the Lagos Mainland and working on the Island may spend three to five hours in traffic daily. Getting up at 4 a.m. to beat traffic is not unusual. Getting home after 10 p.m. is not unusual. The net result is that the sleep window for many Lagos workers is compressed from both ends, often to five hours or fewer.

This is not a uniquely Lagos phenomenon. In Abuja, sprawling urban development without adequate transport connectivity means long commutes from satellite towns. In Port Harcourt, oil industry schedules and the demands of a 24-hour economy create similar time pressures. In Kano, market schedules, long-distance trade, and informal economy work patterns produce their own sleep interruptions.

The health consequences of commute-related sleep loss are the same as any other form of sleep deprivation. What makes the traffic problem distinct is the stress component: being stuck in traffic is not passive waiting.

It is sustained stress, with noise, heat, exhaust fumes, frustration, and social aggression all contributing to cortisol elevation. Arriving home already stressed and then being unable to wind down before sleep further shortens and degrades the quality of rest.

Shift Work: The Silent Sleep Crisis in Nigerian Workplaces

Every hospital, clinic, factory, security company, bank, and petrol station in Nigeria employs shift workers.

These are the people whose working hours rotate through the 24-hour clock: day shifts, afternoon shifts, and night shifts, often with unpredictable rotation schedules. The health consequences of shift work on sleep are among the most thoroughly documented in occupational medicine.

A 2026 study published in the Nigerian Journal of Pharmacy examined healthcare workers at secondary hospitals in Abuja’s Municipal Area Council and found that shift work was strongly associated with sleep disturbances, burnout, anxiety, and prolonged sadness.

A previously published Ethiopian study that surveyed healthcare workers across Africa found that 43.2 percent of Nigerian nurses meet the criteria for shift-work sleep disorder, a recognized clinical condition defined by insomnia or excessive sleepiness directly caused by a work schedule that overlaps with normal sleeping hours.

A consultant psychiatrist at the Federal Neuropsychiatric Hospital, Yaba, Lagos, Dr. Dapo Adegbaju, has called on hospital management to give night-shift nurses dedicated rest days to allow their biological clocks to recover.

He stated that nurses who work night shifts have their sleep-wake cycle distorted, exposing them to both psychological and physical health challenges including post-traumatic stress disorder, depression, insomnia, and severe anxiety.

Shift-work sleep disorder is not limited to healthcare. Bank workers on rotating schedules, factory workers on night production lines, security guards on overnight duty, logistics and transport workers, petrol station attendants, and call center staff all face the same disruption to the body’s internal clock, which is called the circadian rhythm.

The circadian rhythm regulates not just sleep but also body temperature, hormone secretion, immune function, and digestion. When work schedules force people to be awake when their body expects sleep and asleep when their body expects wakefulness, the mismatch affects every one of these systems.

Who Is Most Affected By Sleep Problems In Nigerian Cities

1) Long-distance commuters: people who spend three or more hours daily in traffic and compensate by sleeping less.

2) Night-shift workers in healthcare: nurses, doctors, and support staff working overnight rotations.

3) Factory and industrial workers on rotating shifts.

4) Security and guard workers on overnight duty.

5) Residents living near expressways, markets, motor parks, or nightlife areas

6) Families living in dense housing where generator noise from neighbors cannot be avoided.

7) Low-income urban residents whose housing is closer to roads and industrial areas with less insulation.

8) Students living in hostels or off-campus housing in noisy urban environments.

9) Nursing mothers and parents of young children, who already have disrupted sleep and live under additional environmental noise pressures.

The Culture of Not Sleeping

On top of the environmental and structural forces disrupting sleep, Nigeria has a cultural problem: busyness is valued and rest is not. In Lagos, Abuja, and Port Harcourt, the phrase “I do not have time to sleep” is worn as a badge of productivity. Sacrificing sleep to work a second job, to attend night programs, to run a side business, or to stay awake networking online is not seen as harmful. It is seen as the kind of hustle that builds a future.

The World Sleep Day 2025 statement from Mouka Nigeria and the Nigerian Society of Physiotherapy specifically named Nigeria’s economic demands and rapid urbanisation as having fostered a culture that glorifies overworking, with cities like Lagos, Abuja, and Port Harcourt never truly sleeping. The organizations called insufficient sleep no longer just an individual concern but a public health issue.

The irony documented in occupational health research is that the ambition driving people to sleep less is self-defeating.

Sleep-deprived workers make more errors, are slower to complete tasks, produce lower quality output, and are less creative.

They are also less emotionally regulated, making workplace conflicts more likely. Sacrificing sleep to work more often produces less, not more, over any extended period.

What Needs to Change and What You Can Change Today

Some of the forces disrupting sleep in Nigerian cities require government action: better electricity supply so generators run less, stricter noise ordinances with real enforcement, investment in public transport to reduce commute times, and workplace policies that protect shift workers from the worst health consequences of irregular scheduling.

The Lagos State Environmental Protection Agency’s April 2026 warning about nighttime noise above 55 decibels is a start. It needs enforcement alongside it.

But many Nigerians can also make immediate changes to protect their own sleep within the constraints of their current situation.

The most important changes are environmental: moving the generator as far from sleeping areas as physically possible, closing windows and using thick curtains or blackout material to reduce both noise and light, using foam earplugs (available at most Lagos pharmacies for a few hundred naira), and treating the hour before sleep as a transition period rather than an extension of the working day.

For shift workers, the single most evidence-based recommendation from sleep medicine is to protect your sleep anchor: choose a specific sleep time that you maintain as consistently as possible on all days, including days off, to give your circadian rhythm the best chance of settling.

Strategic napping before a night shift, light therapy exposure (bright light in the morning, darkness in the sleeping room), and avoiding caffeine in the last six hours before your intended sleep window are all supported by research.