This is an academic paper that provides a review on what is known about the links between suicide and overdoses, with a focus on pathways through opioid use, issues of intent, risk factors, prevention strategies, and unresolved issues. Untreated and undertreated pain leading to suicide is also explored.
Bohnert, A.S.B., Ilgen, M.A. (2019). Understanding Links among Opioid Use, Overdose, and Suicide. New England Journal of Medicine, 380(1), 71‐79.