REVIEW OF: Østergaard SD et al, JAMA Psychiatry 2024;81(12):1198–1206

STUDY TYPE: Retrospective cohort study

Suicide prevention often focuses on psychiatric illness, but this large Danish study shows that medical conditions themselves can substantially raise suicide risk. Researchers analyzed data from over 6.6 million adults in Denmark (2000–2020), examining 31 medical conditions across nine categories. They also tested whether having a prior mental disorder compounded suicide risk. In total, 12,876 suicides were recorded.

Most medical conditions were linked to higher suicide rates, particularly gastrointestinal disorders (about 70% higher), cancers (50% higher), and blood-related illnesses such as HIV/AIDS (50% higher). The risk rose with increasing disability burden—a clear dose-response pattern. However, for patients with prior mental illness, additional medical conditions didn’t further raise suicide risk, likely because their baseline risk was already high.

CARLAT TAKE
Serious medical illness alone elevates suicide risk, so screening shouldn’t stop at psychiatric diagnoses. Stay alert for suicidality in patients with complex or disabling conditions, especially soon after diagnosis. For those with mental disorders, risk remains high regardless of physical comorbidity—another reason to maintain close monitoring and proactive safety planning.