That epidemic is here. After the opiod crisis, overdose is now the leading cause of death for those under 50. Suicide is increasing for all age cohorts, not just teenagers. Deaths from alcohol are increasing. Life expextancy in the US has been declining for 3 years. I actually suspect we'll start to get a handle on these problems in the next few years since we're beginning to collectively wake up to the importance of mental health and the damage our screens and isolation are doing.
You forgot the most mind-related epidemic disease in the USA: obesity. Without the proper education or mind sanity, it's hard to resist the constant assault of junk food. Now 21% of the American teenagers are obese, and 39% of adults.
https://www.cdc.gov/obesity/data/childhood.html