Mental health and addictions

Read our publications related to this topic.

Journal Articles

09/04/2026

Opioid use during pregnancy among individuals with disabilities

Camden A, Brogly SB, Gomes T, Guttmann A, Lunsky Y, Sharpe I, Lu H, Brown HK. Am J Prev Med. 2026; Apr 9 [Epub ahead of print].

Journal Article

09/04/2026

Association between early methadone dose titration and treatment discontinuation and opioid toxicity: a retrospective cohort study

Garg R, Luo J, Bozinoff N, Sproule B, Antoniou T, Wyman J, Leece P, Munro C, Besharh J, Gomes T. PLoS Med. 2026; 23(4): e1004748.

Journal Article

03/04/2026

Serotonergic antidepressant use following positive airway pressure initiation

Vozoris NT, Luo J, Austin PC, Ryan CM. Sleep Med. 2026; Apr 3 [Epub ahead of print].

Journal Article

21/03/2026

Safer opioid supply initiation among First Nations Peoples in Ontario, Canada, 2019 to 2023

Ledlie S, Rebić N, Hamzat B, Wang T, Bragg S, Iacono A, Shearer D, General Z, Mecredy G, McGregor L, Bertram J, Pine K, Corbiere Y, Smoke A, Gomes T. Int J Drug Policy. 2026; 151:105243. Epub 2026 Mar 21.

Journal Article

12/03/2026

Changes over time in hallucinogen-related emergency department visits in Ontario, Canada

Myran DT, MacDonald-Spracklin R, Levesque AR, Pugliese M, Fiedorowicz JG, McDonald AJ, Rosenblat JD, Colman I, Zein J, Solmi M. Addiction. 2026; Mar 12. [Epub ahead of print].

Journal Article

09/03/2026

Comparative effectiveness of buprenorphine-naloxone and methadone for opioid overdose among youths

Kleinman RA, Larney S, Sule NO, Ma C, Szatmari P, Kurdyak P. JAMA Pediatr. 2026; Mar 9 [Epub ahead of print].

Journal Article

05/03/2026

Mortality following cancer diagnosis among people with non-affective psychoses: mediation by stage at diagnosis and time to treatment initiation

Wootten JC, Richard L, Karp I, Blanchette PS, Solmi M, Anderson KK. Soc Psychiatry Psychiatr Epidemiol. 2026; Mar 5 [Epub ahead of print].

Journal Article

28/02/2026

Equity-related determinants of frequent emergency department visits for substance use disorders: a population-based study in Ontario, Canada

Kim S, Fung KP, Rajack N, Tang F, Patrikar A, Fung K, Friesen EL, Kurdyak P, Le Foll B. Int J Soc Psychiatry. 2026; 207640261419135. Epub 2026 Feb 28.

Journal Article

25/02/2026

Psychiatric hospitalizations among Canadian Armed Forces Veterans and former Royal Canadian Mounted Police members residing in Ontario: a retrospective cohort study

Cyr KS, Kurdyak P, Smith PM, Aiken AB, Cramm H, Mahar AL. Can J Public Health. 2026; Feb 25 [Epub ahead of print].

Journal Article

23/02/2026

First-episode psychosis and substance use involvement across birth cohorts in Canada: a retrospective longitudinal population-based study

Myran DT, Gibb M, Pugliese M, Fiedorowicz J, Kirkbride JB, Anderson KK, Kurdyak P, Tibbo PG, Colman I, Correll CU, Ramsay T, Solmi M. Lancet Psychiatry. 2026; 13(3): 223-232.

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News Releases

News Release

02/02/2026

More Ontarians are being diagnosed with psychosis than those born in earlier decades

A new study suggests that people born more recently are being diagnosed with psychotic disorders (e.g., schizophrenia) more often and at younger ages compared with people born earlier.

News Release

11/12/2025

Study finds domperidone not associated with severe mental health outcomes in new mothers

News Release

29/09/2025

Patients with intellectual and developmental disabilities substantially over-represented among long-stay psychiatric inpatients

Individuals with intellectual and developmental disabilities (IDD) account for more than one in five patients who have been in Ontario’s mental health beds for over a year, according to a new study from researchers at ICES and the Centre for Addiction and Mental Health (CAMH).

News Release

25/07/2025

14/04/2025

Research Programs and appointed ICES Scientists

ICES scientists are appointed to the ICES Research Program which best fits their interests and, as such, become members of a network of health services researchers from across Ontario.

ICES Scientists Research Programs

Mental health and addictions

Journal Articles

Opioid use during pregnancy among individuals with disabilities

Association between early methadone dose titration and treatment discontinuation and opioid toxicity: a retrospective cohort study

Serotonergic antidepressant use following positive airway pressure initiation

Safer opioid supply initiation among First Nations Peoples in Ontario, Canada, 2019 to 2023

Changes over time in hallucinogen-related emergency department visits in Ontario, Canada

Comparative effectiveness of buprenorphine-naloxone and methadone for opioid overdose among youths

Mortality following cancer diagnosis among people with non-affective psychoses: mediation by stage at diagnosis and time to treatment initiation

Equity-related determinants of frequent emergency department visits for substance use disorders: a population-based study in Ontario, Canada

Psychiatric hospitalizations among Canadian Armed Forces Veterans and former Royal Canadian Mounted Police members residing in Ontario: a retrospective cohort study

First-episode psychosis and substance use involvement across birth cohorts in Canada: a retrospective longitudinal population-based study

News Releases

More Ontarians are being diagnosed with psychosis than those born in earlier decades

Study finds domperidone not associated with severe mental health outcomes in new mothers

Patients with intellectual and developmental disabilities substantially over-represented among long-stay psychiatric inpatients

Surrogates more likely to be diagnosed with mental illness, study finds

Correctional populations in Ontario have twenty times the rate of substance use-related healthcare visits, study finds

Safer opioid supply improves health outcomes among people at high risk of overdose

Hospital visits for cannabis use linked to higher dementia risk, study finds

Transgender and gender diverse people less likely to receive follow-up after a mental health hospitalization

Contribution of cannabis use disorder to new cases of schizophrenia has almost tripled over the past 17 years

Multiple sclerosis linked to higher risk of mental illness during and after pregnancy

Research Programs and appointed ICES Scientists