Quality of life and adherence to healthy lifestyle factors among breast cancer survivors in Cyprus

Abstract Breast cancer is a prevalent disease for women globally, with rising survival rates highlighting the need to address the breast cancer survivors’ (BCS) quality of Life (QoL). Furthermore, adherence to a healthy lifestyle is associated with decreased mortality in BCS. Mapping the Lifestyle Medicine pillars and the World Cancer Research Fund/American Institute for Cancer Research recommendations identifies 7 healthy lifestyle components: weight management, physical activity, healthy eating, restorative sleep, avoidance of risky substances, positive social connections and stress management. This study examines adherence to these healthy lifestyle components and QoL among BCS. A cross-sectional study conducted in 2022-23 recruited primary adult BCS from the Bank of Cyprus Oncology Centre. Participants completed a survey assessing self-reported QoL and adherence to the aforementioned 7 healthy lifestyle components, through validated questionnaires. Out of 349 BCS approached, 272 were included in the final analysis. Mean age and time since main treatment completion were 51 (SD: 7.4) and 3.6 (SD: 2.5) years respectively. Amongst study participants 58% were classified as bad sleepers, 53.3% were overweight or obese, 23% were stressed, 78% reported to have moderate/high physical activity, and 60% adhered to the Mediterranean diet. Regarding substance use, 16% were current smokers, and 18% were hazardous drinkers. Median score for social support was 75 (IQR: 53-97; max score=100) and for QoL was 67 (IQR: 50-97; max score:100). BCS in Cyprus generally exhibit moderate adherence to the Mediterranean diet, engage in fairly active lifestyles and enjoy high levels of social support and QoL. On the other hand, a substantial proportion smoke or drink, are overweight or obese, are stressed and have poor sleep quality. Targeted interventions to increase the adherence of breast cancer survivors to the 7 healthy lifestyle components are required. Key messages • Overall variability exists in the adherence to healthy lifestyle components among BCS in Cyprus. • This population can benefit from intervention targeting sleep, stress and weight management.