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📱 Men's Health

Screen Time and Your Health

What excessive phone and screen use does to your body — evidence-based

The average Nigerian now spends 4–7 hours daily on screens — phones, laptops, TV, tablets. For young Nigerians in cities, screen time often exceeds 10 hours. While technology is essential for work and communication, excessive and poorly-managed screen use has measurable effects on sleep, eyes, posture, mental health, and physical activity.

Signs and Symptoms

✓ Eye strain, burning, or blurred vision after screen use (digital eye strain / CVS)
✓ Headaches — especially frontal, occurring in the afternoon
✓ Neck and upper back pain from looking down at phones
✓ Difficulty sleeping or maintaining sleep
✓ Anxiety, restlessness, or low mood associated with heavy social media use
✓ In children: delayed speech, reduced attention span, poor social skills
✓ FOMO (fear of missing out) and compulsive checking behaviour

Risk Factors

When to Seek Help

Persistent eye pain or vision changesNot just tiredness — get a formal eye test to rule out dry eye disease, refractive error, or glaucoma.
Child under 6 with delayed speechExcess screen time is associated with speech and language delays — a paediatric assessment is warranted.
Depression or anxiety linked to social mediaIf mental health symptoms are tied to social media use, a psychologist can help address compulsive use patterns.
Neck pain radiating to armsChronic 'text neck' can cause cervical radiculopathy — physiotherapy or specialist assessment needed.

Tests & Diagnosis

🧪 Visual acuity + eye pressure
Screens worsen pre-existing refractive errors and eye strain. A basic eye test every 2 years is recommended.
🧪 PHQ-9 / GAD-7 questionnaire
If mood or anxiety symptoms — screen for depression and anxiety in heavy social media users.

Treatment Options

1
20-20-20 rule for eyes
Every 20 minutes of screen work, look at something 20 feet (6 metres) away for 20 seconds. This resets the focusing muscles and reduces eye strain dramatically.
2
Screen-free hour before bed
Blue light from screens suppresses melatonin by 2–3 hours. Put the phone down by 10 pm if you sleep at 11. Use Night Shift or warm display mode as a partial mitigation.
3
Phone-free zones
Bedroom (for sleep), dining table (for meals), and worship time. These boundaries reduce compulsive checking and improve presence.
4
Set app time limits
iPhone Screen Time and Android Digital Wellbeing allow daily limits per app. Set 45–60 minute limits on Instagram, TikTok, and Twitter.
5
Posture — raise your phone to eye level
Most neck pain from phones comes from looking down. Hold your phone at eye level. When on a laptop, use an external monitor or laptop stand.
6
For children: clear limits
WHO guidelines: no screen time under 2 years (except video calling); 1 hour maximum per day aged 3–5; 2 hours maximum aged 5–18, not including schoolwork. Co-view content with young children.
7
Scheduled digital fasting
One day per week with minimal screens (or at least no social media) has measurable benefits for wellbeing in studies. Choose Sunday or your day of rest.

Frequently Asked Questions

Are blue-light glasses worth buying?
The evidence is mixed. Studies do not consistently show they prevent digital eye strain or improve sleep more than simply reducing screen time or using Night Shift mode. They are not harmful, but not a substitute for breaks and phone-free evenings.
Does screen time cause permanent eye damage?
Digital eye strain causes temporary symptoms (dryness, blurring, fatigue) but current evidence does not show screens cause permanent structural eye damage in adults. In children, excessive near-work including screens may accelerate myopia (short-sightedness) progression.
How much screen time is too much for my child?
Under 2: none except live video calls. Ages 2–5: 1 hour maximum of high-quality content. School-age: 2 hours non-educational maximum. These are WHO and American Academy of Pediatrics recommendations.
Is social media linked to depression in teenagers?
Yes — multiple large studies show heavy social media use (more than 3 hours daily) is associated with depression, anxiety, and body image problems in adolescents, particularly girls. Limiting use is prudent.
What about eye drops for screen use?
Artificial tears (lubricating eye drops like Systane or GenTeal) can relieve dry eye symptoms from screen use. Use as needed — they are safe for daily use. Avoid drops that 'get the red out' — these cause rebound redness with regular use.

Related Pages

Sleep Apnoea in NigeriaHow to Reduce Blood Pressure NaturallyInsomnia: A Nigerian Guide to Sleeping Better

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