By Dr Khutso N. Sebetseba — Paediatrician | Pocket Paediatrics with Dr K
When we think about children’s rights, we think about safety, education, healthcare, and protection. Rarely do we think about sleep.
And yet, insufficient sleep is now recognised as a significant public health concern. International data suggest that up to one in three school-aged children do not meet recommended sleep durations. Adolescents fare even worse, with studies showing that the majority sleep less than the advised 8–10 hours per night.
Rest is biological infrastructure.
The Modern Childhood Schedule
Today’s children wake early for school, move from classroom to extra-murals, return home to homework, and often unwind with screens late into the evening. Exposure to blue light in the hour before bed suppresses melatonin secretion, delaying sleep onset and fragmenting sleep cycles.
Layer onto this the pace of adult life: long work hours, traffic, overscheduled routines, and a strict bedtime routine becomes negotiable.
No one sets out to deprive a child of sleep. But over time, small erosions accumulate.
What Sleep Actually Does: The Physiology
Sleep is an active, highly regulated process involving neurological, endocrine, and immune systems. From a paediatric standpoint, sleep is not peripheral. It is foundational.
During our deep, or slow-wave sleep, growth hormone secretion peaks. Inadequate deep sleep has measurable effects on growth velocity in children. Sleep also modulates immune function. Research shows that children who sleep fewer hours are more likely to experience frequent infections. Even partial sleep deprivation impairs immune response. Metabolically, insufficient sleep alters appetite-regulating hormones. Leptin decreases while ghrelin increases, promoting hunger and a preference for high-calorie, high-sugar foods. For this reason; chronic sleep deprivation has been associated with increased risk of obesity and insulin resistance in paediatric populations. Cognitively, sleep supports memory consolidation and executive function. Studies demonstrate that sleep-deprived children show reduced attention span, poorer impulse control, and diminished academic performance.
How Sleep deficit shows up
Increasingly, I see children who:
- Struggle to wake in the morning
- Fall asleep in class
- Display irritability or emotional volatility
- Have behaviour labelled as “hyperactive” or “oppositional”
- Rely on sugary snacks for energy
- Experience recurrent minor infections
In some cases, families pursue assessments for ADHD, anxiety, or learning difficulties. Sometimes these diagnoses are appropriate. But sometimes, the primary issue is chronic sleep deprivation. When sleep is restored, attention improves. Emotional regulation stabilises. Appetite normalises. Immunity strengthens.
Sleep is often the most underestimated intervention in paediatric practice.
How Much Sleep Is Enough?
Current recommendations suggest:
- Preschoolers: 10–13 hours per 24-hour period
- School-aged children: 9–12 hours
- Adolescents: 8–10 hours
Sadly, survey data suggest that a significant proportion of children fall below these thresholds, particularly teenagers.
Adolescents face a biological shift in circadian rhythm that naturally delays sleep onset, while early school start times demand early waking. The result is a generation of chronically sleep-restricted young people.
Protecting a Child’s Right to Rest
Protecting rest does not require perfection. It requires priority:
- Consistent bedtimes and wake times support circadian stability.
- Screen cessation at least 60 minutes before sleep improves melatonin regulation.
- Dark, cool, device-free bedrooms support deeper sleep cycles.
- Predictable wind-down routines reduce sympathetic nervous system activation.
- Limiting overscheduling preserves restorative time.
In a culture that rewards busyness, choosing to protect bedtime may feel countercultural. But from a clinical perspective, adequate sleep reduces behavioural difficulties, supports metabolic health, and strengthens immune resilience.
Rest as a Public Health Priority
Human Rights Month reminds us that children have the right to health and optimal development. We often focus on vaccines, nutrition, and access to healthcare services. Sleep deserves to stand alongside them.
A well-rested child grows better; learns better; regulates emotions more effectively; maintains healthier weight patterns and recovers from illness more efficiently.
If we want healthier, calmer, more resilient children, protecting their right to rest is not a luxury. It is preventative medicine.