05-05-2025
Exercise Can Help Protect Against Cancer Fatigue, Depression
Lingering fatigue and depression are more common among women than men cancer survivors and often lead to a decrease in recreational physical activities in all patients, new data showed.
However, moderate physical activity was linked to an almost 50% lower risk for cancer-related fatigue, and both moderate and vigorous physical activity were associated with a two- to fivefold reduced risk for depression among cancer survivors, according to the analysis presented at the American Association for Cancer Research (AACR) Annual Meeting 2025.
The findings 'highlight the importance of providing special attention and tailored interventions such as exercise programs, support groups, and mind-body behavioral techniques for vulnerable groups to help effectively manage fatigue and improve participation in recreational activities as they are an essential aspect of quality of life,' Simo Du, MD, a resident at NYC Health + Hospitals and Jacobi Medical Center/Albert Einstein College of Medicine, New York City, said in a news release.
Du noted that, during her residency, cancer-related fatigue was a common complaint among patients, affecting 'not just their daily activities but also their overall quality of life and mental health, making tasks like climbing stairs, doing groceries, or laundry overwhelming.'
Cancer-related fatigue affects more than 80% of patients who receive chemotherapy or radiation therapy, while depression affects around 25% of patients. Unlike typical fatigue, cancer-related fatigue can linger for weeks, months, or even years after treatment, Du explained.
Despite its high prevalence, cancer-related fatigue remains 'overlooked and undertreated,' she noted during a conference press briefing. In addition, cancer-related fatigue can affect men and women differently.
To investigate further, Du and her colleagues analyzed National Health and Nutrition Examination Survey (NHANES) data from 1552 cancer survivors (736 men and 816 women).
After adjusting for age, race, socioeconomic status, and comorbidities, women cancer survivors were more likely to experience fatigue (odds ratio [OR], 1.54; P < .017) and depression (OR, 1.32; P = .341) related to their cancer compared with men cancer survivors.
Du said there are likely multiple reasons behind the sex differences observed.
Women may, for instance, be more likely to experience side effects from chemotherapy, radiation, and long-term use of endocrine treatments because of slower drug clearance, which can lead to higher concentrations and a stronger immune response that may heighten inflammatory side effects.
In multivariate logistic regression analysis, cancer-related fatigue (OR, 1.93; P = .002) and depression (OR, 2.28; P = .011) were both strongly associated with reduced moderate recreational activities, such as brisk walking, biking, golfing, and light yard work.
The data also showed a protective role for physical activity. For patients who engaged in moderate physical activity, their risk for cancer-related fatigue (OR, 0.52; P = . 002) and depression (OR, 0.41; P = .006) was significantly reduced, Du reported.
For depression (but not cancer-related fatigue), 'the higher the intensity of physical activity, the higher the protective effects, with almost 4-5 times the reduction of the depression,' Du noted.
Although the NHANES uses standardized protocols designed to minimize biases, Du said a limitation of the current study is the use of self-reported data and the fact that women could potentially overreport fatigue symptoms and men could potentially underreport symptoms of depression.
Looking ahead, Du and her colleagues are planning studies to assess the effectiveness of tailored interventions on cancer-related fatigue and explore the connection between cancer-related fatigue and different mechanisms, such as inflammatory markers, to see if gender modifies the association.
Commenting on the study for Medscape Medical News , Jennifer Ligibel, MD, a senior physician at the Dana-Farber Cancer Institute in Boston, said that, because the dataset is cross-sectional, it is unclear whether people who were more tired weren't exercising or if people who weren't exercising were more tired.
However, Ligibel explained, a huge body of literature has demonstrated that exercise is 'the most efficient remedy for fatigue,' and it likely helps with depression too.
In fact, in a recent survey of cancer patients conducted by the American Society for Clinical Oncology, slightly more than half of patients reported that their oncologist talked about exercise and diet during clinic visits, Ligibel said. Provider recommendations for exercise and diet were associated with positive changes in these behaviors.
'Roughly half of oncologists now give exercise advice; that figure is a lot more than it was a few years ago, but it's still not universal,' Ligibel said.
