Psychological Stress in Cervical Cancer Patients Leads to Higher Risk of Death

by Mary Selvaraj on  August 1, 2019 at 1:10 PM Cancer News
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Women diagnosed with cervical cancer are prone to cancer-specific mortality due to psychological stress. They are also at risk of several stress-related psychiatric disorders, such as depression, anxiety, and stress-reaction and adjustment disorders. Also, stressful life events such as the death or disease of a family member can play a role.
Psychological Stress in Cervical Cancer Patients Leads to Higher Risk of Death
Psychological Stress in Cervical Cancer Patients Leads to Higher Risk of Death

Bottom Line: Psychological stress was associated with a higher risk of cancer-specific mortality in women diagnosed with cervical cancer.

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Journal in Which the Study was Published: Cancer Research, a journal of the American Association for Cancer Research

Author: Donghao Lu, MD, PhD, a postdoctoral researcher in the Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm.

Background: "Patients receiving a cancer diagnosis are at increased risk of several stress-related psychiatric disorders, such as depression, anxiety, and stress-reaction and adjustment disorders," Lu said. "Emerging evidence from both experimental and epidemiological studies indicates that psychological distress might affect the progression of many cancer types."

How the Study Was Conducted and Results: In this study, researchers examined the potential influence of stress on the cancer-specific mortality of patients with cervical cancer. They examined records of 4,245 patients diagnosed with cervical cancer in Sweden between Jan. 1, 2002, and Dec. 31, 2011. Using Swedish personal identification numbers, they linked the patients to the Swedish Patient Register, which collects nationwide information on hospital discharge records and specialist visits. Data from this register were used to identify patients who had been clinically diagnosed with any of three psychiatric disorders: stress-reaction and adjustment disorders, depression, and anxiety.

The researchers also identified patients who had experienced a stressful life event, such as the death or severe illness of a family member, divorce, or being between jobs, as these events would further reflect an emotional burden on patients, Lu explained.

The researchers used Sweden's Causes of Death Register to identify women who had cervical cancer or unspecified uterine cancers as the underlying cause of death. During the follow-up period, 1,392 patients died, and cervical cancer was listed as the cause of death for 1,005 of them.

In all, the researchers found that 1,797 patients either had stress-related disorders or had undergone stressful life events. Patients with either a stress-related disorder or a stressful life event were 33 percent more likely to die of the disease than those who had not reported stress. Those who had stress-related disorders were 55 percent more likely to die of their cervical cancer, and those who had experienced a stressful life event were 20 percent more likely to die of their disease.

Lu pointed out that the association of stress with higher risk of dying of cervical cancer remained, independent of tumor characteristics, mode of diagnosis, and type of treatment. The associations were also consistent across demographic groups and clinical characteristics.

Author's Comments: Lu said there are several possible explanations for the link between psychological stress and cervical cancer-specific mortality. For one, a woman suffering from a psychological disorder may be less likely to seek treatment and may be diagnosed at a later stage. Biologically, he noted, previous research has shown that chronic stress may reduce cellular immune response, which may affect the progression of infection-related cancers, such as cervical cancer. Moreover, a previous study by Lu and his colleagues further supports the role of psychological stress in cervical cancer development, potentially through oncogenic infection of human papillomavirus.

Fellow author Karin Sundström, MD, PhD, a project coordinator in the Department of Laboratory Medicine, Karolinska Institutet, said that in Sweden, psychological support is available for patients at large, university-based clinics, but not in smaller regional facilities. She said many patients do not receive emotional support, partially because of lack of awareness of the toll emotional stress can take.

"Our findings support that oncologists or gynecologists perform active evaluation of psychiatric status on return visits to see how patients with cervical cancer are doing, not only somatically, but also mentally," Sundström said. "If confirmed in other populations and countries, psychological screening and intervention may be considered as an integral component in cervical cancer care."

Study Limitations: Lu pointed out that this study suggests an association between stress and cervical cancer prognosis and should not be interpreted as a causal link.

Funding & Disclosures: This study was supported by the Swedish Cancer Society, the Swedish Research Council for Health, Working Life, and Welfare, and the Karolinska Institutet. The authors declare no conflict of interest.

Source: Eurekalert

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