The review, which will be published online July 25 in the Journal of Clinical Oncology (JCO), says that a cancer diagnosis often prompts immediate changes in health behavior, including significant modifications in diet and physical activity.
Using the MEDLINE and PubMed databases, lead author Wendy Demark-Wahnefried, PhD, RD, LDN, of Duke University Medical Center, and colleagues from the National Cancer Institute and Brown University identified and reviewed more than 100 studies of cancer survivors published since 1996.
Researchers found that many survivors adopt healthier behaviors, such as following a healthier diet (30-60% of survivors), quitting smoking (46-96% of smokers with tobacco-related cancers, such as lung or head and neck), abstaining from alcohol (47-59% of those with head and neck cancers, which are closely linked to alcohol use), and regular physical activity (with up to 70% of survivors reporting 30 minutes of exercise a day, at least 5 days a week). Many of these changes should be beneficial because cancer survivors are a vulnerable population, at increased risk for second cancers, osteoporosis, obesity, cardiovascular disease, and diabetes.
However, researchers noted that not all cancer patients adopted healthier behaviors, with only 25-42% of survivors consuming adequate amounts of fruits and vegetables, and roughly 70% of breast and prostate cancer survivors remaining overweight or obese. The analysis also found conflicting data on physical activity, as well as smoking status, noting that although survivors with tobacco- or alcohol-related cancers were
Contact: Carrie Housman
American Society of Clinical Oncology