"There are reasons to worry about self-control and use of our products."

Internal document
"There are reasons to worry about self-control and use of our products. I think the biggest problems people have are: (1) compulsive use, to fill gaps in their time, and they end up spending more time than they'd like, instead of spending time with their families, or studying; (2) unhealthily fixating on other people – most prototypically, compulsively looking up the profile of your ex-partner." "Higher Facebook use is correlated with worse psychological states (wellbeing, loneliness, etc.), although changes in Facebook use are uncorrelated with changes in wellbeing measures. It's also worth noting that higher Facebook use is typically positively associated with higher MSI, and is associated with people saying that Facebook has more value." "An experiment found that a 1-month break from Facebook improved self-reported wellbeing. There is some legitimate doubt around how to interpret this experiment, unfortunately it's the only high-quality experiment that I'm aware of." "A large fraction of users struggle with their Facebook/Instagram use. Among US teens '84% had taken a break from social media, and 74% have taken a break from Instagram.' 'More than a third of the survey respondents feel they have spent more time than they would have liked on Instagram. About one in five respondents think they have a problem controlling their time.'" "A significant minority report 'problematic use'. 3.1% of Facebook users in the U.S. report 'serious problems with sleep, work, or relationships that they attribute to Facebook AND concerns or preoccupations about how they use Facebook.'"
— Unnamed employee