Teen Talk/Line is a non-profit hotline in which trained advisors help guide people through a myriad of troubling problems including eating disorders.
Teen Talk: Users message advisors through a phone application that is easy to download and easily accessible.
Teen Line: Users call (310) 855-4673 to talk to the trained advisors.
Their mission statement:
Established in 1980, TEEN LINE is a nonprofit, community-based organization helping troubled teenagers address their problems. It is our mission to provide personal teen-to-teen education and support before problems become a crisis, using a national hotline, current technologies and community outreach.
Their website: https://teenlineonline.org/