Social media: how does it affect our mental health and well-being?IN 1971, the first email was delivered. More than 40 years on, social media has taken the world by storm. Social networking sites, such as Facebook and Twitter, are now used by 1 in 4 people worldwide. Such activity may seem harmless, but some researchers suggest social media may affect our mental health and well-being. In 2012, Medical News Today reported on a study suggesting that Facebook use may feed anxiety and increase a personís feeling of inadequacy.