Social media and body image issues. A research overview. This is my topic but I

Social media and body image issues. A research overview. This is my topic but I need an Introduction for this.
-What is your topic?
-Who is affected by this topic?
-How does it affect the community as a whole? 
-Cost Associated to the issues
-Short-term effects versus long-term effects
The student must answer the graded discussion with a substantive reply to the graded discussion question(s)/topic(s) posted by the course instructor, Two scholarly sources references are required.