Edit: Found one study, but this is likely to be a confirmation bias effect: http://www.ncbi.nlm.nih.gov/pubmed/26094889 http://www.ncbi.nlm.nih.gov/pubmed/26094

Edit: Found one study, but this is likely to be a confirmation bias effect: http://www.ncbi.nlm.nih.gov/pubmed/26094889 http://www.ncbi.nlm.nih.gov/pubmed/26094889 "Bi-monthly FMD cycles started at middle age extended longevity, lowered visceral fat, reduced cancer incidence and skin lesions, rejuvenated the immune system, and retarded bone mineral density loss." This study shows not so promising results: http://www.ncbi.nlm.nih.gov/pubmed/20733612 http://www.ncbi.nlm.nih.gov/pubmed/20733612 Points to "Overall, there was no difference in mouse survival (P=0.37) or tumor volumes (P ≥ 0.10)" (mice that already had prostate cancer) tl;dr: There might be some potential benefits of fasting in the prevention of cancer, might not be the case for treatment of cancer...