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Diets high in industrially processed foods and sugary drinks are linked with more cancer, mainly through obesity but perhaps also through additives and packaging chemicals. Sugar itself does not 'feed' a tumour in the way social media claims.
In the French NutriNet-Sante cohort (BMJ 2018, n=104,980) a 10% increase in the share of ultra-processed food (UPF, NOVA group 4) in the diet was associated with a 12% higher overall cancer risk, an association since replicated in UK Biobank and EPIC for colorectal, breast and total cancer and for cancer mortality, and in a 2024 umbrella review that graded the cancer evidence as suggestive rather than convincing. Sugar-sweetened beverages are associated with obesity, type 2 diabetes and, in some cohorts, colorectal and liver cancer; sugar taxes reduce purchases by 10-20% but have no cancer outcome data yet. The mechanistic story is plural: energy density and adiposity, glycaemic load, additives (emulsifiers, nitrites, artificial sweeteners), contact-material chemicals and displacement of fibre-rich whole foods. UPF is a classification, not a mechanism, and the NOVA system's reliability is disputed. The popular corollary that dietary sugar directly feeds cancer and that cutting it starves tumours is not supported: every cell uses glucose, blood glucose is homeostatically regulated, and no trial shows sugar restriction improves cancer outcomes independent of weight.
UPF promotes over-consumption and adiposity through energy density, hyper-palatability and low satiety; specific additives and processing contaminants may add direct carcinogenic or microbiome-disrupting effects.
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One technology page on OnCo cites this paper by its DOI; this record gives the citation a page of its own so a reader can follow it without leaving OnCo. Read the abstract above alongside the citing page listed under Related; the record was created automatically from the Europe PMC entry and its figures have not been checked by hand.
Query for this technology: (TITLE:"Ultra-processed food and sugar-sweetened drinks" OR ABSTRACT:"Ultra-processed food and sugar-sweetened drinks") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about Ultra-processed food and sugar-sweetened drinks, not a curated reading list.
Shares Ultra-processed food (NOVA group 4), Red and processed meat reduction, Mediterranean and plant-forward dietary patterns, Diet, exercise and lifestyle roadmap: causes established → interventions that disappointed → exercise proven as treatment.
Shares Glycaemic index and glycaemic load, Obesity-related cancers (IARC list of 13), Diet, exercise and lifestyle roadmap: causes established → interventions that disappointed → exercise proven as treatment, Hepatocellular carcinoma.
Shares Diet, exercise and lifestyle roadmap: causes established → interventions that disappointed → exercise proven as treatment, Misinformation and unproven therapies, Prevention we already have is not deployed, Hepatocellular carcinoma.
Shares Obesity-related cancers (IARC list of 13), Diet, exercise and lifestyle roadmap: causes established → interventions that disappointed → exercise proven as treatment, Prevention we already have is not deployed, Hepatocellular carcinoma.
Shares Glycaemic index and glycaemic load, Warburg-effect diet claims ('sugar feeds cancer'), Diet, exercise and lifestyle roadmap: causes established → interventions that disappointed → exercise proven as treatment, Misinformation and unproven therapies.
Shares Glycaemic index and glycaemic load, Diet, exercise and lifestyle roadmap: causes established → interventions that disappointed → exercise proven as treatment, Prevention we already have is not deployed, HR-positive / HER2-negative breast cancer.
Shares Diet, exercise and lifestyle roadmap: causes established → interventions that disappointed → exercise proven as treatment, Misinformation and unproven therapies, Prevention we already have is not deployed, Hepatocellular carcinoma.
Shares Misinformation and unproven therapies, Prevention we already have is not deployed, Hepatocellular carcinoma, HR-positive / HER2-negative breast cancer.