| Summary: | Background: informal carers of cancer patients with cachexia face additional challenges to those encountered by informal carers in general because of the central role food and eating play in everyday life. Patient weight loss and anorexia, core features of cancer cachexia, are frequent causes of distress in caregivers. Identification of quality of life (QOL) issues can inform the development of interventions for both caregivers and patients, and facilitate communication with healthcare professionals (HCPs). Aim: to identify QOL issues that are relevant to carers of cancer patients with cachexia. Design: A systematic review and thematic synthesis of the qualitative literature were conducted. Reporting followed the PRISMA guidelines. Data sources: PubMed, ISI web of knowledge, EMBASE, Medline, CINAHL, PsychINFO, and PsycARTICLES were searched for publications dated from January 1980 to June 2013 using search terms relating to cancer, cachexia, QOL and carers. Papers written in the English language, featuring direct quotes from the carers of adult patients with any cancer diagnosis and cachexia or problems with weight loss or anorexia were included. Results: five themes were extracted from the sixteen identified studies. These highlighted the impact on everyday life, the attempts of some carers to take charge, the need for HCP input, conflict with the patient and negative emotions. Conclusions: the complexity of caring for a cancer patient with cachexia translates into a range of problems and experiences for informal carers. By addressing the impact of caring for a patient with cancer cachexia on carers, both caregiver and patient QOL may improve
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