[roywiggins]

Once someone's lost touch with reality, maybe not. In the earliest stages? Maybe, yeah:

> McFarlane believes that psychosis can be prevented with a range of surprisingly low-tech interventions, almost all of which are designed to reduce stress in the family of the young person who is starting to show symptoms.

> McFarlane cites research done at UCLA suggesting that certain kinds of family dynamics — families that don't communicate well, or are overly critical — can make things worse for a young person at risk of schizophrenia.

https://www.npr.org/sections/health-shots/2014/10/20/3566400...

[hirvi74]

I can believe it. Not smoking is a great way to prevent certain types of lung cancer. However, if you have lung cancer, quitting smoking won't cure it.