The Global Story Meta and YouTube lost in a landmark trial. Is this just the tip of the iceberg?
Mar 27, 2026
Marianna Spring, BBC social media investigations correspondent who probes whistleblower accounts and algorithmic harms. She walks through a landmark trial blaming platform design for teen addiction. Short dives cover autoplay, infinite scroll, product choices that prioritized engagement, whistleblower revelations about recommendation systems, and the possible ripple effects for law and regulation.
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Jury Rules Platforms Were Deliberately Engineered To Be Addictive
- A Los Angeles jury found Meta and YouTube deliberately engineered addictive features that harmed a young woman's mental health.
- The verdict focused on design elements like infinite scroll and autoplay that companies introduced to increase engagement despite safety risks.
Engagement UX Features Drove Mental Health Harm In Teens
- Design features such as filters, infinite scroll and autoplay were implemented to boost engagement but contributed to anxiety, depression and distorted self-image in young users.
- Marianna links these specific UX changes to measurable harm in Kayleigh's case starting from age nine on Instagram and six on YouTube.
Whistleblowers Say Algorithms, Not Just Content, Drive Harm
- Whistleblowers told Marianna internal evidence shows algorithms and platform design, not just individual posters, are chiefly responsible for amplifying harmful content.
- Insiders shared documents and firsthand accounts revealing tension between safety teams and product priorities.