Look at the suicide rates.

World Health Organisation does a bunch of work on safer pesticides because it's so commonly used as a method in lower income countries.

https://www.who.int/news/item/17-12-2020-new-study-highlight...

(Reducing access to means and methods is part of a package of measures that can be used to reduce deaths by suicide, and suicidality. It's important to remember that it's not the only thing being done).