# Ultra-processed food and sugar-sweetened drinks

Source: https://onco.cc/technologies/ultra-processed-food-ssb/  
OnCo record `ultra-processed-food-ssb` (Technology). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

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.

## Summary

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.

## Fields

- Kind: Technology
- Status: emerging
- Last checked: 2026-09-08
- Principle: 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.
- Strengths: Large prospective cohorts, replicated; Policy levers (taxes, front-of-pack labels, marketing limits) exist and shift purchasing; Overlaps with obesity and diabetes prevention
- Limitations: UPF classification is heterogeneous and contested; Confounding by socioeconomic status; Cancer-specific mechanisms beyond adiposity unproven

## Sources

- Wikipedia: https://en.wikipedia.org/wiki/Ultra-processed_food
- NutriNet-Sante UPF and cancer (BMJ 2018): https://doi.org/10.1136/bmj.k322
- UPF umbrella review (BMJ 2024): https://doi.org/10.1136/bmj-2023-077310

## Connected records

- ideas: [Controlled feeding trials to separate ultra-processing from calories](https://onco.cc/ideas/idea-nl-upf-controlled-feeding-trial/)
- cancers: [Colorectal cancer](https://onco.cc/cancers/colorectal/), [Hepatocellular carcinoma](https://onco.cc/cancers/hcc/), [HR-positive / HER2-negative breast cancer](https://onco.cc/cancers/breast-hr-positive/), [Pancreatic ductal adenocarcinoma](https://onco.cc/cancers/pancreatic/)
- fronts: [Diet, Exercise & Lifestyle](https://onco.cc/fronts/nutrition-lifestyle/), [Prevention & Risk](https://onco.cc/fronts/prevention/)
- technologies: [Mediterranean and plant-forward dietary patterns](https://onco.cc/technologies/mediterranean-plant-forward-diet/), [Red and processed meat reduction](https://onco.cc/technologies/red-processed-meat-reduction/)
- terms: [Glycaemic index and glycaemic load](https://onco.cc/terms/glycaemic-index/), [Obesity-related cancers (IARC list of 13)](https://onco.cc/terms/obesity-related-cancers/), [Ultra-processed food (NOVA group 4)](https://onco.cc/terms/ultra-processed-food/), [Warburg-effect diet claims ('sugar feeds cancer')](https://onco.cc/terms/warburg-effect-diet-claims/)
- bottlenecks: [Misinformation and unproven therapies](https://onco.cc/bottlenecks/b-misinformation/), [Prevention we already have is not deployed](https://onco.cc/bottlenecks/b-prevention-adoption/)
- key papers: [Consumption of ultra-processed foods and cancer risk: results from NutriNet-Santé prospective cohort](https://onco.cc/key-papers/paper-fiolet-bmj/), [Ultra-processed food exposure and adverse health outcomes: umbrella review of epidemiological meta-analyses](https://onco.cc/key-papers/paper-lane-bmj/)
- roadmaps: [Diet, exercise and lifestyle roadmap: causes established → interventions that disappointed → exercise proven as treatment](https://onco.cc/roadmaps/nutrition-lifestyle-roadmap/)

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