As with every technology, there is a side that is not so good. In particular, social media can have a negative impact on teens who suffer from, or are susceptible to, mental illness. The National Institute of Mental Health reports that the lifetime prevalence of any mental disorder among adolescents is 49.5%, and 22.2% of adolescents will suffer from a severe mental impairment in their lifetimes. Also, young adults (age 18 to 25) have the highest incidence of mental illness of any adult age group: 25.8%, compared to 22.2% for ages 26 to 49, and 13.8% for ages 50 and up.