Comprehensive Lifestyle Modification Intervention to Improve Chronic Disease Risk Factors and Quality of Life in Cancer Survivors

摘要

Objectives: Healthy lifestyle modifications, including weight management, regular physical activity, prudent diet, and stress relief, have been identified as key components of tertiary cancer prevention. In this study, we evaluate the effectiveness of a comprehensive, lifestyle medicine intervention, Lifestyle 180((R)), on chronic disease risk factors and quality of life in cancer survivors. Design: Retrospective subgroup analysis of a clinical program. Settings/Location: An outpatient medical facility. Subjects: Lifestyle 180 participants with a diagnosis of past cancer. Intervention: Sixty-four hours of intensive nutrition, culinary medicine, physical activity, and stress relief practices over a 6-month period, with 9- and 12-month follow-up. Outcome measures: Pre-postanalysis (baseline vs. 12 months) included biometrics: weight, body mass index (BMI), waist circumference, and blood pressure; standard laboratory tests: lipids, C-reactive protein, fasting insulin/glucose, and insulin resistance; and empirically validated questionnaires: perceived stress, depression, and quality of life. Results: Fifty-eight cancer survivors participated in Lifestyle 180. Average age was 63 years, roughly 75% of participants were female, and the greatest majority had a diagnosis of breast, prostate, or skin cancer. Diagnosis of hyperlipidemia, hypertension, diabetes, and prediabetes presented in 47%, 57%, 22%, and 50% of patients, respectively. Forty-five percent of patients were obese, 24% were overweight, and 16% were depressed. At 12 months, participants lost an average of 14 pounds (-6.6%, p0.001) and 2.6 inches off their waist (-5.9%, p0.001). BMI decreased significantly by an average of 2.4kg/m(2) (-6.8%, p0.001). Significant decreases from well-managed baseline levels also occurred in most measured biomarkers (average change: high-density lipoprotein +3.3mg/dL, p0.05; triglycerides -23.0mg/dL, p0.01; C-reactive protein -1.3mg/L, p0.01; fasting insulin -4.2U/mL, p0.05; and homeostasis model assessment-insulin resistance -1.5, p0.01; n=40). Changes in psychosocial variables included significant improvements in perceived stress (-20%, p0.01) and quality of life (+54%, p0.001). We were unable to detect a difference in depressive symptoms. Conclusions: Cancer survivors participating in a comprehensive intervention could employ the prescribed lifestyle modifications to produce clinically relevant health and quality-of-life benefits. These data support the American Cancer Society (ACS) and American Society of Clinical Oncology (ASCO) recommendations to incorporate healthy lifestyle modifications into long-term cancer survivorship care.