Higher IQ makes most favorable life outcomes more likely--and mental health is no exception.

Gale, C. R., Batty, G. D., Tynelius, P., Deary, I. J., & Rasmussen, F. (2010). Intelligence in Early Adulthood and Subsequent Hospitalization for Mental Disorders. Epidemiology [Abstract], 21(1), 70–77. http://www.jstor.org/stable/25662808

In this study of >1 million Swedish men, individuals with higher IQ were less likely to experience:
➡️ Schizophrenia
➡️ Mood disorders
➡️ Personality disorders
➡️ Alcohol and substance use disorders
... and more.

Hazard ratios for admission for various categories of psychiatric disorder according to 9-point scale. Adapted from \"Early Adulthood and Subsequent Hospitalization for Mental Disorders\" by C. R. Gale, G. D. Batty, P. Tynelius, I. J. Deary, and F. Rasmussen, 2010, Epidemiology, 21(1), p. 70–77.

People with lower IQ were also more likely to be admitted to an inpatient hospital for psychiatric reasons.

Total number of admissions for various categories of psychiatric disorders per 1000 person-years, by the 9-point IQ scale. Adapted from \"Early Adulthood and Subsequent Hospitalization for Mental Disorders\" by C. R. Gale, G. D. Batty. P. Tynelius, I. J. Deary, and F. Rasmussen, 2010, Epidemiology, 21(1), pp. 70-77.

Link to study: https://t.co/EbxFC4wPtI