Lawyers argue that Instagram and YouTube intentionally addicted and harmed teen in landmark social media trial

Updated: 10 FEB 26 16:16 ET

By Clare Duffy, Samantha Delouya, CNN

Los Angeles (CNN) — Lawyers for a now-20-year-old woman argued that addictive features harmed her mental health as opening statements began Monday in a landmark trial against Meta and YouTube, the first of hundreds of similar cases to go to trial.

The plaintiff — identified by her first name, Kaley, or her initials, KGM — and her mother accused the tech companies of intentionally creating addictive platforms that caused her to develop anxiety...