How are schizophrenia and alcohol use disorder linked?
Alcohol use in people with schizophrenia is influenced by a mix of genetic and biological factors, as well as life circumstances.
Genetic and family factors: Studies show that people with schizophrenia are more likely to develop alcohol problems if they have close relatives with Alcohol Use Disorder (AUD). However, schizophrenia itself is not more common in children of parents with AUD.
Biological influences: Many individuals with schizophrenia drink alcohol to self-medicate, hoping to ease their symptoms, but alcohol often makes things worse. Brain chemistry also plays a role – changes in dopamine levels may make people more sensitive to alcohol’s rewarding effects, increasing the risk of addiction. Additionally, schizophrenia can impact impulse control and thinking abilities, making it easier to develop a drinking problem, even with small amounts of alcohol.
Social and environmental factors: Life challenges also contribute to alcohol use. Many people with schizophrenia struggle with stress, poverty, and loneliness, which may lead them to alcohol as a coping mechanism. Some use alcohol as a way to fit in socially or feel a sense of belonging. Additionally, changes in mental healthcare – such as moving away from hospital-based treatment to independent community living – can sometimes leave individuals with fewer job opportunities, less access to recreation, and limited social support, making alcohol more appealing.