A study of nearly 29,000 people shows that five simple lifestyle choices—maintained even before a cancer diagnosis—can reduce the risk of death after diagnosis by 16 percent. Researchers at Newcastle University in the United Kingdom tracked the habits of 28,550 individuals and found that those who adhered most closely to a set of evidence-based dietary and lifestyle recommendations had significantly better long-term survival outcomes than those who followed them least, regardless of cancer type or smoking history.
The five recommendations at the heart of the study, developed in 2018 by the World Cancer Research Fund (WCRF) and the American Institute for Cancer Research (AICR), are achievable goals that most people already understand: maintain a healthy weight, be physically active, eat wholegrains, vegetables, fruit and beans, limit red and processed meat, and limit alcohol consumption. What makes this Newcastle research remarkable is that it provides the most comprehensive evidence to date showing these habits matter not just for prevention, but for survival after diagnosis.
The research team, led by Professor John Mathers, assigned participants scores from zero to five based on how closely they followed the recommendations at the time they joined a biobank—before any cancer diagnosis. The results were striking: for every single point gained on that scale—equivalent to fully adopting one recommendation—participants showed an 8 percent lower chance of dying from any cause over time. Those in the highest third of adherence had a 16 percent lower mortality risk compared to those in the lowest third.
What gives this finding particular weight is its consistency across different populations and cancer types. The survival benefit held true whether people smoked or not, and across multiple cancers including breast and liver cancer, suggesting these recommendations offer broad protective value rather than benefits limited to a narrow group. This matters profoundly for the millions of people living with cancer globally, offering them agency in their recovery and long-term health.
Dr. Fiona Malcomson, a researcher at Newcastle University and co-author of the study, emphasizes the practical implication: "The take-home message is that the 2018 WCRF/AICR Cancer Prevention Recommendations apply to cancer survivors too." In other words, the very habits that help prevent cancer in the first place appear to help people survive and live better lives after diagnosis.
The study, published in May in the journal Cancer, arrives at a moment when cancer survivorship is increasingly understood as its own distinct phase of care. As Nadia Ameyah, Director of WCRF International's Netherlands-based charity WKOF, notes, cancer survivorship and quality of life after diagnosis are key priorities. This research suggests that healthcare providers should actively encourage cancer survivors to adopt these five lifestyle changes—not as optional wellness advice, but as evidence-based interventions that may meaningfully extend life and improve outcomes.
Professor Mathers himself calls the findings "incredibly exciting" because they represent the first time researchers have shown in a UK cohort that higher adherence to these recommendations may reduce mortality risk for cancer survivors. The research team now suggests that policymakers and clinical guideline developers should prioritize interventions that help cancer patients maintain or improve their adherence to these five recommendations, potentially offering a low-cost, achievable way to improve survival for millions of people worldwide.