Affiliation:
1. Faculty of Health Sciences, Department of Nursing Science, Physiotherapy and Medicine University of Almeria Almeria Spain
2. Torrecárdenas University Hospital Almeria Spain
3. Research Group CTS‐1114 Advances and Innovation in Health University of Almeria Almeria Spain
4. Health Research Center CEINSA University of Almeria Almeria Spain
5. Mediterráneo Hospital Almería Spain
Abstract
AbstractCancer is a global health concern influenced by genetics, environment and lifestyle choices. Recent research shows that a ketogenic diet (KD) might ease cancer symptoms and reduce tumour size. We hypothesised that the KD could result in improvements in cancer‐related variables. Therefore, this study aims to perform a systematic review and meta‐analysis to assess the KD's efficacy for patients with cancer. The databases PubMed (MEDLINE), Web of Science, CINAHL and Open Grey were utilised for conducting a systematic review and meta‐analysis. The analysis was limited to randomised controlled trials with adult participants aged 18 years and above. Levels of glucose, cholesterol, insulin‐like growth factor 1, weight and quality of life were evaluated following the KD. After identifying 596 articles in the initial search, eight studies, lasting between 4 and 16 weeks, were included in the systematic review and seven in the meta‐analysis. The KD led to decreased glucose levels in patients with cancer but did not show significant improvements in cholesterol, insulin‐like growth factor 1, weight or quality of life. Based on the results of this systematic review and meta‐analysis, there is insufficient evidence to establish a definitive link between the KD and cancer‐related parameters. While some studies suggest potential benefits in terms of some outcomes and tumour size reduction, further research is required to fully comprehend the effects of this diet.