Social media has long provided platforms for people to share images of their envious lifestyles. But new research from Indonesia says those happy snaps taken on holiday or at cool parties can have a damaging effect on people. Data from the Indonesia Family Life Survey reveals that adults often feel resentment towards their richer friends after seeing their positive social media posts. The research, which surveyed 9,987 households, was conducted by social scientists at the University of Brawijaya and Yogyakarta State University in Indonesia, and academics from Britain’s University of Manchester. The study looked specifically at Facebook, Twitter and chat, and analysed 22,423 individuals across almost 300 districts in a country of 264 million. Although the effect of social media on mental health has been documented globally, this new research pinpoints particular issues in developing countries such as Indonesia. “In a society like Indonesia with such dramatic inequality, social media may lead to envy and bitterness, since poor individuals are exposed to the happiness and positive images of their richer friends,” said the study, published in the International Journal of Mental Health and Addiction . Inequality in Indonesia has been rising fast since 2000 and the country has the third-fastest-growing economy among G20 nations. It has a growing consumer class whose lives contrast starkly with those of Indonesians who have received less education or cannot find jobs. Indonesia’s transition to democracy has also played out on social media with negative results, according to the research authors. A cacophony of news about government failures, corruption, crime, conflicts and poverty is amplified on social media on a daily basis – providing little escape for the country’s citizens. Without the ability to avoid so much negative information, individuals may face frustration that affects their mental health, says the study. “[The study] is a strong reminder that these technologies can have a downside,” says co-author, Gindo Tampubolon. This is made worse by the prevalence of social media and the increased time that people spend on these platforms. Recent statistics from the Indonesia Internet Exchange show that Indonesians access social media such as BlackBerry Messenger, WhatsApp and Twitter every 72 seconds on average over the course of nearly 11 hours each day. Facebook reports a total of 54 million individual users in Indonesia, making it the fourth-largest Facebook-using country in the world. In a society like Indonesia with such dramatic inequality, social media may lead to envy and bitterness, since poor individuals are exposed to the happiness and positive images of their richer friends Indonesia Family Life Survey Meanwhile, Twitter reports 22 million Indonesian users, who publish 385 tweets per second, putting the country in fifth place worldwide. At the same time, the number of cases of mental disorder is growing in the country, with an estimated 11.8 million people affected, according to the latest Indonesia Basic Health Research survey. The study authors are urging policymakers to take steps to ensure people use social media more carefully. “We would like to see public health officials think creatively about how we can encourage citizens to take a break from social media or be aware of the negative consequences it can have on mental health,” said Gindo.