"Problematic Use: Serious, negative impact on sleep, relationships, work, or lives, combined with lack of control over FB use. Prevalence: 3.1% severe (US), 55% mild (global). More common for younger people."

Internal document
"FB is slightly negative for well-being (WB) and we have a phased plan to turn this around." "1. What we know: Despite positives, average net effect is slightly negative. Science is still early, primarily US based, and relies on self report. 2. Vision: 2019: FB 'best-in-class' amongst social media apps. 2020 & beyond: FB/IG net positive to well-being. 3. Framing: Using an integrity-like framework to drive progress on sub-areas: Problematic Use, Social Comparison and Loneliness (plus more to be defined). Prioritizing Problematic Use for product work, investing in substantial understand/research work. 4. Communications Opportunity: Seize the opportunity for Facebook Inc. to lead the industry on well-being." "Overall impact of Facebook on well-being is negative but small." "We don't yet fully understand reasons why Facebook may be net negative." Youth: "Overall net impact on well-being is negative but small (similar to adults). Moderate use of digital technology has benefits. Depends on the individual. Most vulnerable teens offline are most vulnerable teens online." Instagram: "Limited understanding, though initial work suggests similar to FB - slightly net negative." "IG teens worse than IG adults on general well-being, negative affect, loneliness, and depression." "Current areas of focus Problematic Use: Serious, negative impact on sleep, relationships, work, or lives, combined with lack of control over FB use. Prevalence: 3.1% severe (US), 55% mild (global). More common for younger people. Social Comparison: Evaluating yourself negatively to others whom you perceive as better off. Happens online and offline, though amplified on FB. Prevalence: 5% chronic (global), 40% mild (global). More common in people under 30 and women. Loneliness: Difference between quality of friendships person has and wants. People who are already feeling lonely turn to FB to feel better, and reducing FB use can improve loneliness. Prevalence: 7% chronic (global), 36% mild (global). Higher in younger adults (age 18-24), veterans, and LGBTQ."
— Unnamed employee