There are warning signs of teen drug use including things like grades dropping, mood swings and loss of interest in their hobbies or family. (verywellfamily.com)
Rated R for teen drug use and partying, sexual material, brief nudity and language throughout. (seattletimes.com)
Therefore, they deny teen drug use is going on in their family or they avoid seeing the warning signs of their teen using. (verywellfamily.com)