Facebookadmitted that using social media in some cases would hurt people’s mental health on last Thursday.

Two of Facebook’s in-house social scientists, including Direct of Research David Ginsberg and Research Scientist Moira Burke, acknowledged in a blog post yesterday that passive consumption of content on the social network can harm users’ mood and mental health, and revealed some attractive information. But, they say, actively interacting on Facebook – especially directly with close friends – can actually improve people’s well-being.

“Students from University of Michigan assigned to passively read Facebook for 10 minutes, reported worse moods than those directed to post themselves, or to communicate with friends at the end of that day.”

In other words, if you using Facebook to browse your own subscription or click the post aimlessly, you are possible to have a negative impact on your mood.

But Burke’s own research has found that “sharing messages, posts and comments with close friends and reminiscing about past interactions [are] linked to improvements in well-being,” including reduced levels of depression and loneliness. One-to-one interactions – rather than simply posting status updates – were key to those improvements.

Similarity, when using Facebook to communicate with people or friend, but not as the simply “browsing” information, then it seems to have a positive effect on people.

Last week on Thursday, Chamath Palihapitiya, the former executive who criticized the company, walked back his comments, saying: “I genuinely believe that Facebook is a force for good in the world.”

Facebook says they will use the data and encourage more social interactions among users to reduce the amount of time they waste and to avoid negative psychological effects during used.