Is social media more harmful or helpful?
This is genuinely mixed, and the honest answer is "it depends heavily on how, how much, and who's using it."
Where the case for harm is strongest:
Where the case for benefit is real:
What the research actually shows is less dramatic than headlines suggest either way. Effect sizes in most studies are small. Jonathan Haidt's work gets a lot of attention for the harm case, but other researchers (like Candice Odgers) point out the correlational data is weaker than portrayed and causation is hard to establish.
My actual take: the format matters more than the technology itself. Passive scrolling through algorithmic feeds seems worse than active messaging with people you know. Platforms optimized purely for engagement/ad revenue seem worse than ones with different incentive structures. The "social media is good or bad" framing might be less useful than asking "what specific use patterns and designs cause what specific effects for whom?"
What's driving your interest in this—personal use, something you're reading, or a broader question you're wrestling with?