Short-form videos have become one of the dominant ways young people engage with social media. These are clips lasting seconds up to a few minutes, driven by personalized algorithms that are deeply immersive and precisely tailored to users’ interests, with endless autoplay and infinite scroll providing no stopping cues. These feature-driven clips are standard in platforms like TikTok, Instagram Reels, and YouTube Shorts, and are designed to keep attention locked in. This design matters because it encourages repeated, often automatic engagement. Users don’t need to decide what to watch next, as the platform decides for them. Over time, this may shape how attention, mood, and motivation are regulated, especially in children and adolescents whose brains are still developing.

As concern grows about the mental health impacts of social media, researchers have increasingly turned their attention to short-form video. A recent systematic review and meta-analysis by Nguyen and colleagues pulled together 70 studies to examine how this type of content use is linked to mental health, cognition, and well-being. Rather than focusing on a single study, meta-analyses pool results across many studies to better understand overall effects and who is at greatest risk.

Across the studies included in the review, higher levels of short-form video use were consistently associated with poorer mental health outcomes, particularly among adolescents and young adults.

The most commonly........

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