Schizophrenia How Common Is Schizophrenia? By Kendra Cherry, MSEd Kendra Cherry, MSEd Facebook Twitter Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book." Learn about our editorial process Updated on February 13, 2022 Medically reviewed Verywell Mind articles are reviewed by board-certified physicians and mental healthcare professionals. Medical Reviewers confirm the content is thorough and accurate, reflecting the latest evidence-based research. Content is reviewed before publication and upon substantial updates. Learn more. by Steven Gans, MD Medically reviewed by Steven Gans, MD Steven Gans, MD is board-certified in psychiatry and is an active supervisor, teacher, and mentor at Massachusetts General Hospital. Learn about our Medical Review Board Print Westend61/Getty Images Table of Contents View All Table of Contents Schizophrenia Prevalence Who Is Affected? Impact Prognosis Schizophrenia is a relatively uncommon but serious mental illness characterized by changes in a person’s thoughts, feelings, and behaviors. It is a chronic brain disorder that can affect a person’s ability to interpret reality. People with this condition often experience hallucinations, delusions, disorganized thinking, and abnormal behaviors. How many people are affected by schizophrenia in the U.S. and worldwide? While there is a relatively low prevalence of schizophrenia, it is a serious mental disorder that can cause significant impairment. Schizophrenia is a serious chronic, lifelong condition. However, it can be managed with appropriate treatment, so it is important to seek help from a doctor or mental health professional if you are experiencing symptoms of this disorder. Schizophrenia Prevalence The term prevalence is used to indicate how many people are currently living with a specific condition at or during a particular period of time. It is often used in the field of epidemiology, an area of medicine that seeks to understand disease prevalence, risk factors, and outcomes. Estimates suggest that less than 1% of people are affected by schizophrenia. The World Health Organization reports that 20 million people worldwide have schizophrenia.The National Institute of Mental Health (NIMH) suggests that between 0.25 and 0.64% of the U.S. population has schizophrenia and related psychotic disorders. NIMH estimates that the worldwide prevalence of schizophrenia is around 0.33 to 0.75% (among non-institutionalized individuals). However, it can be difficult to estimate the exact number of people affected by schizophrenia for several reasons. Some factors that influence the ability to gather statistics on the condition are due to the complexity of making a diagnosis, the overlap with other psychiatric conditions, and the number of people who go undiagnosed and untreated. NIMH notes that schizophrenia is often combined with other psychotic disorders in studies that estimate the prevalence of the condition, which may impact statistics on the disorder. Signs and Symptoms of Schizophrenia Who Is Affected? Schizophrenia can impact people throughout the entire lifespan, but people are usually diagnosed sometime between late adolescence and their early 30s. Symptoms tend to begin earlier in men than in women, but many of the more subtle signs of the condition may be present for some time before more obvious symptoms begin and a diagnosis is made. It is also important to note that the condition does not always occur in isolation. Around half of the people who have schizophrenia also have co-occurring mental health or behavioral conditions. Research has found that anxiety, depression, and substance use disorders commonly co-occur with schizophrenia. Having a comorbid mental disorder may result in overall poorer quality of life and worse clinical outcomes depending on the nature and severity of the condition. Estimates suggest that among adults with schizophrenia: 23—57% also have depression 10—15% also have panic disorder 12—29% have post-traumatic stress disorder (PTSD) 12—23% have obsessive-compulsive disorder (OCD) Nearly 50% have a lifetime substance use disorder Impact While schizophrenia has a relatively low prevalence, it is linked to significant social, health, and economic issues, which is often referred to as a condition's 'disease burden.' The burden of the disease is an assessment of the societal and individual impact of a condition as measured by a variety of indicators including the impact on individual health, overall mortality, and economic costs associated with the disease. A study published in The Lancet found that schizophrenia is one of the top 15 causes of disability throughout the world. Another study published in JAMA Psychiatry found that the lifespan of those with schizophrenia is shortened by an average of 28.5 years compared to that of the general population. The study looked at adults between the ages of 20 and 64 starting in 2001 and followed up in 2007. Overall, adults who had schizophrenia were 3.5 times likely to die during those years compared to adults in the general population. The results indicated that the leading causes of death among people with schizophrenia included: Cardiovascular diseaseLung cancerInfluenzaPneumoniaAccidental deathNonsuicidal substance-induced death. Deaths linked to substance use highlight the possible dangers of comorbid substance use. While accidental deaths accounted for more than twice as many deaths as suicide, research suggests that almost 5% of people with schizophrenia die by suicide. This rate is much higher than it is for the general population. NIMH notes that this risk of suicide tends to be the highest during the earliest stages of the condition. If you are having suicidal thoughts, contact the National Suicide Prevention Lifeline at 988 for support and assistance from a trained counselor. If you or a loved one are in immediate danger, call 911. Prognosis WHO reports that people who have schizophrenia are two to three more times likely to die early. This is largely due to preventable physical illnesses such as infections, cardiovascular disease, and metabolic conditions. Prognosis can be difficult to estimate since mental health experts often have different definitions of what recovery means. One 2013 study suggested that approximately one in seven people with schizophrenia recover, meaning they experience improvements in clinical and social domains lasting at least two years. Other statistics related to the outlook for schizophrenia include: While the condition is treatable, approximately 69% of people who have schizophrenia do not receive appropriate care90% of people who have untreated schizophrenia live in low- or middle-income countries, which often leads to a lack of access to mental health treatment Another significant barrier to treatment is that people with schizophrenia are less likely to seek out treatment for their condition. The overall outlook for schizophrenia tends to vary considerably from one individual to the next, but the management of symptoms is possible with appropriate treatment. If you or a loved one are struggling with schizophrenia, contact the Substance Abuse and Mental Health Services Administration (SAMHSA) National Helpline at 1-800-662-4357 for information on support and treatment facilities in your area. For more mental health resources, see our National Helpline Database. How Schizophrenia Is Treated 7 Sources Verywell Mind uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. World Health Organization. Schizophrenia. National Institute of Mental Health. Schizophrenia. Tsai J, Rosenheck RA. Psychiatric comorbidity among adults with schizophrenia: a latent class analysis. Psychiatry Res. 2013;210(1):16-20. doi:10.1016/j.psychres.2013.05.013 GBD 2016 Disease and Injury Incidence and Prevalence Collaborators. Global, regional, and national incidence, prevalence, and years lived with disability for 328 diseases and injuries for 195 countries, 1990-2016: a systematic analysis for the Global Burden of Disease Study 2016. Lancet. 2017; 16;390(10100):1211-1259. doi:10.1016/S0140-6736(17)32154-2 Olfson M, Gerhard T, Huang C, Crystal S, Stroup TS. Premature mortality among adults with schizophrenia in the United States. JAMA Psychiatry. 2015;72(12):1172–1181. doi:10.1001/jamapsychiatry.2015.1737 Palmer BA, Pankratz VS, Bostwick JM. The lifetime risk of suicide in schizophrenia: a reexamination. Arch Gen Psychiatry. 2005;62(3):247-53. doi:10.1001/archpsyc.62.3.247 Jääskeläinen E, Juola P, Hirvonen N, et al. A systematic review and meta-analysis of recovery in schizophrenia. Schizophr Bull. 2013;39(6):1296‐1306. doi:10.1093/schbul/sbs130 By Kendra Cherry, MSEd Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book." See Our Editorial Process Meet Our Review Board Share Feedback Was this page helpful? Thanks for your feedback! What is your feedback? Other Helpful Report an Error Submit Speak to a Therapist Online Advertiser Disclosure × The offers that appear in this table are from partnerships from which Verywell Mind receives compensation.