Obsessive-compulsive disorder linked to increased risk of death: Study | Health - Hindustan Times
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Obsessive-compulsive disorder linked to increased risk of death: Study

ANI | | Posted by Tapatrisha Das, Washington Dc
Jan 18, 2024 05:15 PM IST

The study shows that people with OCD are more likely to die from natural and unnatural causes.

People with obsessive-compulsive disorder (OCD) could be more likely to die from both natural and unnatural causes than those without the illness, according to a Swedish study published in The BMJ.

Obsessive-compulsive disorder linked to increased risk of death: Study(Unsplash)
Obsessive-compulsive disorder linked to increased risk of death: Study(Unsplash)

The researchers point out that many of the natural causes of death are preventable, suggesting that better surveillance, prevention, and early intervention strategies should be implemented to reduce the risk of fatal outcomes in people with OCD.

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OCD is typically a long-term psychiatric disorder affecting about two per cent of the population. It is characterised by intrusive thoughts, urges or images that trigger high levels of anxiety and other distressing feelings - known as obsessions - that the person tries to neutralise by engaging in repetitive behaviours or rituals - known as compulsions.

OCD is also associated with academic underachievement, poor work prospects, alcohol and substance use disorders, and an increased risk of death.

Previous studies on specific causes of death in OCD have mainly focused on unnatural causes (eg, suicide), but little is known about specific natural causes.

To fill this knowledge gap, researchers set out to estimate the risk of all causes and cause-specific death in people with OCD compared with matched unaffected people from the general population and with their unaffected siblings.

Using data from several Swedish population registers, they identified 61,378 people with OCD and 613,780 individuals without OCD matched (1:10) by sex, birth year, and county of residence, and a further sibling group of 34,085 people with OCD and 47,874 without OCD.

The average age at OCD diagnosis was 27 years and groups were monitored for an average of 8 years from January 1973 to December 2020.

Overall, people with OCD had a higher death rate than matched individuals without OCD (8.1 versus 5.1 per 1,000 person years, respectively).

After adjusting for a range of potentially influential factors such as birth year, sex, county, migrant status, education and family income, people with OCD had an 82% increased risk of death from any cause.

The excess risk of death was higher for both natural (31% increased risk) and, particularly, unnatural causes of death (a 3-fold increased risk).

Among the natural causes of death, people with OCD had increased risks due to respiratory system diseases (73%), mental and behavioural disorders (58%), diseases of the genitourinary system (55%), endocrine, nutritional, and metabolic diseases (47%), diseases of the circulatory system (33%), nervous system (21%), and digestive system (20%).

Among the unnatural causes, suicide showed the highest risk of death (a nearly fivefold increased risk), followed by accidents (a 92% increased risk).

The risk of all-cause death was similar in both women and men, although women with OCD had a higher relative risk of dying due to unnatural causes than men with OCD, likely due to the lower baseline risk among women in the general population, note the researchers.

In contrast, people with OCD had a 10% lower risk of death due to tumours (neoplasms).

This is an observational study, so can't establish cause and the researchers point out that registry data only includes diagnoses made in specialist care. It's also unclear whether the findings generalise to other settings with different populations, health systems and medical practices.

Nevertheless, this was a large study based on high-quality national data, and the results remained largely unchanged after further adjustment for psychiatric conditions and family factors, suggesting that they withstand scrutiny.

As such, they conclude: “Non-communicable diseases and external causes of death, including suicides and accidents, were major contributors to the risk of mortality in people with OCD. Better surveillance, prevention, and early intervention strategies should be implemented to reduce the risk of fatal outcomes in people with OCD.”

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This story has been published from a wire agency feed without modifications to the text. Only the headline has been changed.
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