{"entity":{"id":"unproven-diet-claims","kind":"term","name":"Unproven diet claims (alkaline, juice, 'anti-cancer' diets)","aka":["Alkaline diet","Gerson therapy","Juice cleanse","Cancer diet myths"],"tldr":"Diets marketed as cancer cures or preventives with no supporting evidence: alkaline diets, juice cleanses, Gerson therapy, apricot kernels and the like. Some are merely useless; several have caused harm or led people to delay effective treatment.","summary":"The alkaline diet claims foods change blood pH and that acidic conditions cause cancer; blood pH is homeostatically fixed and diet cannot alter it, and tumour microenvironment acidity is a consequence of tumour metabolism, not of diet. Gerson therapy (juices, coffee enemas, supplements) has caused electrolyte deaths and has no evidence of efficacy; amygdalin/laetrile is cyanogenic and has been shown ineffective in an NCI trial. A 2018 JNCI study found patients choosing alternative medicine alone had 2.5 times the mortality of those receiving conventional treatment. These claims spread through social media, wellness marketing and, occasionally, licensed practitioners; they exploit the real evidence that diet affects cancer risk. Countering them requires clinicians to ask about diet and supplements without judgement and to offer evidence-based dietitian support, so that the vacuum is filled by something better.","asOf":"2026-09-08","wikipedia":"https://en.wikipedia.org/wiki/Alkaline_diet","links":[{"label":"Alternative medicine use and survival (JNCI 2018)","url":"https://doi.org/10.1093/jnci/djx145"}],"tags":[],"related":["idea-moon-misinformation-rapid-response","idea-moon-prebunking-at-diagnosis","idea-nl-ask-about-diet-prebunking"],"cancers":[],"sections":[],"technologies":["ketogenic-diet-glioblastoma","dietary-supplements-treatment-interactions","vitamin-d-omega3-supplementation","soy-breast-cancer","nutrition-screening-mnt","laetrile-amygdalin"],"targets":[],"drugs":[],"companies":[],"institutions":[],"pathways":[],"terms":["warburg-effect-diet-claims"],"trials":[],"people":[],"bottlenecks":["b-misinformation","b-patient-voice"],"keyPapers":[],"journals":[],"dependsOn":[],"notes":[],"category":"Nutrition & lifestyle"},"route":"/terms/unproven-diet-claims/","neighbours":{"idea":[{"id":"idea-moon-misinformation-rapid-response","kind":"idea","name":"A cancer misinformation rapid-response unit that rebuts within 48 hours","route":"/ideas/idea-moon-misinformation-rapid-response/"},{"id":"idea-nl-ask-about-diet-prebunking","kind":"idea","name":"Ask about diet at diagnosis, and prebunk the myths before the internet does","route":"/ideas/idea-nl-ask-about-diet-prebunking/"},{"id":"idea-nl-antioxidant-supplement-harm-confirmation","kind":"idea","name":"Confirm or refute the harm of antioxidant supplements during chemotherapy","route":"/ideas/idea-nl-antioxidant-supplement-harm-confirmation/"},{"id":"idea-moon-prebunking-at-diagnosis","kind":"idea","name":"Inoculate newly diagnosed patients against common cancer scams","route":"/ideas/idea-moon-prebunking-at-diagnosis/"},{"id":"idea-nl-ketogenic-gbm-definitive-trial","kind":"idea","name":"One definitive ketogenic diet trial in glioblastoma, then stop","route":"/ideas/idea-nl-ketogenic-gbm-definitive-trial/"}],"technology":[{"id":"alternative-medicine-instead-of-treatment","kind":"technology","name":"Alternative medicine used instead of standard treatment","route":"/technologies/alternative-medicine-instead-of-treatment/"},{"id":"coffee-intake-cancer","kind":"technology","name":"Coffee and tea intake","route":"/technologies/coffee-intake-cancer/"},{"id":"curcumin-turmeric","kind":"technology","name":"Curcumin and turmeric","route":"/technologies/curcumin-turmeric/"},{"id":"dietary-supplements-treatment-interactions","kind":"technology","name":"Dietary supplements during cancer treatment: interactions and harms","route":"/technologies/dietary-supplements-treatment-interactions/"},{"id":"essiac-herbal-cancer-cures","kind":"technology","name":"Essiac, Hoxsey and other 'herbal cancer cures'","route":"/technologies/essiac-herbal-cancer-cures/"},{"id":"gerson-therapy-detox-regimens","kind":"technology","name":"Gerson therapy, coffee enemas and 'detox' regimens","route":"/technologies/gerson-therapy-detox-regimens/"},{"id":"ketogenic-diet-glioblastoma","kind":"technology","name":"Ketogenic diets in glioblastoma","route":"/technologies/ketogenic-diet-glioblastoma/"},{"id":"laetrile-amygdalin","kind":"technology","name":"Laetrile (amygdalin, 'vitamin B17')","route":"/technologies/laetrile-amygdalin/"},{"id":"nutrition-screening-mnt","kind":"technology","name":"Oncology nutrition assessment and medical nutrition therapy","route":"/technologies/nutrition-screening-mnt/"},{"id":"soy-breast-cancer","kind":"technology","name":"Soy foods and breast cancer","route":"/technologies/soy-breast-cancer/"},{"id":"vitamin-d-omega3-supplementation","kind":"technology","name":"Vitamin D and omega-3 supplementation","route":"/technologies/vitamin-d-omega3-supplementation/"}],"term":[{"id":"warburg-effect-diet-claims","kind":"term","name":"Warburg-effect diet claims ('sugar feeds cancer')","route":"/terms/warburg-effect-diet-claims/"}],"bottleneck":[{"id":"b-misinformation","kind":"bottleneck","name":"Misinformation and unproven therapies","route":"/bottlenecks/b-misinformation/"},{"id":"b-patient-voice","kind":"bottleneck","name":"Patients lack understanding, navigation and agency","route":"/bottlenecks/b-patient-voice/"}],"person":[{"id":"steve-jobs","kind":"person","name":"Steve Jobs","route":"/people/steve-jobs/"}],"trial":[{"id":"vital","kind":"trial","name":"VITAL (VITamin D and OmegA-3 TriaL)","route":"/trials/vital/"}],"roadmap":[{"id":"nutrition-lifestyle-roadmap","kind":"roadmap","name":"Diet, exercise and lifestyle roadmap: causes established → interventions that disappointed → exercise proven as treatment","route":"/roadmaps/nutrition-lifestyle-roadmap/"}]}}