How does this shift relate to body image, eating disorders, alcohol and tobacco use, drug use, and promiscuity?

During adolescence, there is a developmental shift of focus on peer acceptance and approval. This is also a time when adolescents believe they are the center of attention and have an “imaginary audience,” meaning everyone is watching them.
Respond to the following in a minimum of 175 words:
What are some of the consequences of this shift to peer reliance? What are the advantages or disadvantages?
How does this shift relate to body image, eating disorders, alcohol and tobacco use, drug use, and promiscuity?