A child sits down to watch “just one reel.” Ten minutes later, another appears. Then another. Before the child realizes it, 30 minutes, or even an hour, has disappeared.
Short-form videos are entertaining, engaging and easy to consume. But could excessive scrolling affect the developing brain? Emerging evidence suggests that excessive and problematic short-form video use deserves serious attention.
Attention and concentration
The adolescent brain is still developing, particularly the networks involved in attention, impulse control, planning and self-regulation. Short-form videos provide a continuous stream of novel, highly stimulating content, with a new visual or auditory stimulus every few seconds.
Recent systematic reviews have found associations between problematic short-video use and poorer attention, self-control, working memory and cognitive engagement. This matters because learning requires sustained attention. Reading a chapter, solving a mathematics problem or listening to a teacher requires the brain to stay engaged with one task despite distractions.
A child accustomed to rapid-fire stimulation may find prolonged, relatively slow activities less rewarding.
What about memory?
Memory begins with attention. If information is not adequately attended to and encoded, it is less likely to be remembered. Studies have reported associations between problematic short-video use and poorer working memory and recall.
However, we should be careful: current evidence does not prove that watching reels permanently damages the brain or causes memory loss.
Mood and mental health
The concerns extend beyond academics. Studies have found associations between excessive or problematic short-form video use and anxiety, depression, stress, loneliness, boredom and emotional difficulties.
Again, association does not necessarily mean causation. Children who are anxious, lonely or distressed may also be more likely to turn to social media. The relationship may work in both directions.
Sleep may be one of the biggest casualties
Late-night scrolling is particularly problematic. A child may postpone bedtime because of “just one more reel”. Bright screens, stimulating content, notifications and the anticipation of the next video can make it harder to wind down.
Poor sleep affects attention, memory, mood, learning and metabolic health. Teenagers aged 14–17 generally need 8–10 hours of sleep every night.
A simple rule can help: No recreational screen use close to bedtime, and preferably no phone in the bedroom at night.
The hidden cost of reels
There is another important issue: What is the child NOT doing while scrolling?
An hour spent watching reels is an hour not spent:
• Sleeping
• Studying
• Exercising
• Playing a sport
• Reading
• Talking to family
• Meeting friends
• Pursuing hobbies
• Simply being bored and allowing the mind to wander
WHO recommends that children and adolescents aged 5–17 get at least 60 minutes of moderate-to-vigorous physical activity every day. Excessive sedentary screen time can therefore indirectly contribute to physical inactivity, weight gain and poorer metabolic health.
Should children completely avoid reels?
No. Technology is an integral part of modern childhood. The objective should not be to eliminate screens, but to prevent them from displacing the essentials of healthy development. There is no scientifically established 'safe number of minutes' specifically for reels. A healthier approach is to focus on balance, content, timing and what screen use replaces.
Here are some practical rules that could be helpful:
1. No reels during study time.
2. Avoid recreational screen use for at least an hour before bedtime.
3. Keep phones out of the bedroom at night.
4. Turn off unnecessary notifications and autoplay.
5. Prefer purposeful viewing over endless scrolling.
6. Ensure at least 60 minutes of physical activity every day.
7. Protect adequate sleep (8-10 hours for teenagers).
8. Encourage reading, hobbies, sports and face-to-face social interaction.
9. Parents should model the behaviour they expect from their children.
And perhaps the most important rule: First sleep, study, exercise, family time and responsibilities. Then screen time.
Reels are not inherently harmful. But an endless stream of highly stimulating content should not become the default environment in which a child's developing brain spends its leisure hours.
The goal is to raise children who are connected to technology. In addition, it is to raise children who control technology, rather than technology controlling them.
The opinions expressed in this article are those of the author and do not purport to reflect the opinions or views of THE WEEK.
