Members of Hong Kong’s Generation Z tend to underestimate the negative impact of social media on their mental health and those who frequently use the online platforms are lonelier than those who do not, a survey has found. The Hong Kong Christian Service (HKCS) polled 572 young people aged 11 to 24 between September to December last year to better understanding the relationship between their use of social media and their level of isolation. About 54 per cent of respondents were junior secondary.