SummaryCompaniesPlaintiffs allege Meta hid product risks from users and authoritiesMeta accused of ineffective youth safety features and prioritizing growth over safetyMeta opposed unsealing of internal documents in courtMeta allegedly ignored valid research findings on mental health impactsTikTok allegedly influenced National PTA to publicly support its safety claimsNov 22 (Reuters) - Meta shut down internal research into the mental health effects of Facebook and Instagram after finding causal ...