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A massive 16-year cohort study has revealed an alarming link regarding self-harm in mental disorders. By tracking over 322,000 patients, researchers established that a first psychiatric diagnosis significantly elevates risk. Consequently, the study found a 10.59-fold increase in self-harm incidents compared to the general population. Furthermore, this risk persists across all fourteen diagnostic groups studied. Therefore, clinicians must prioritize suicide prevention from the very first consultation.
The research highlighted that specific conditions carry much higher risks. Specifically, substance use disorders (SUD) showed a staggering hazard ratio of 22.86. Additionally, alcohol use disorders and personality disorders presented significant dangers. Moreover, even disorders like anxiety and organic mental conditions doubled the baseline risk. Thus, the transdiagnostic nature of this threat requires broad clinical attention from medical practitioners.
Demographic data also provides vital insights for risk stratification. Notably, youths aged 24 or younger face the highest cumulative risk. Furthermore, females demonstrate a higher prevalence across most categories, including PTSD and ADHD. However, the compounding effect of substance use remains a universal concern. Consequently, healthcare providers should implement specialized screening for at-risk youth and female patients.
According to the 16-year study, substance use disorder (SUD) carries the highest risk, with a hazard ratio of 22.86, followed by alcohol use disorder (AUD).
The research identifies youths aged 24 years and under as the highest-risk age group. Additionally, female patients show a higher predominance for self-harm across most mental disorders.
Disclaimer: This content is for informational and educational purposes only and does not constitute professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Refer to the latest local and national guidelines for clinical practice.
References
Lo HKY et al. Risk of self-harm in first-diagnosed mental disorders: A 16-year territory-wide health-record database study in Hong Kong. Eur Neuropsychopharmacol. 2026 May 14. doi: undefined. PMID: 42134004.
World Health Organization. Mental Health Fact Sheets. Geneva: WHO; 2025.
Lo HKY et al. Risk of self-harm after the diagnosis of psychiatric disorders in Hong Kong, 2000-10: a nested case-control study. Lancet Psychiatry. 2020 Feb;7(2):135-147.
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