A study of more than 8,700 UK cancer survivors found that people who followed healthy eating patterns had fewer cardiovascular events and a longer life expectancy. No single “ideal” diet stood out, and the findings are associations, not proof.
Why survivors’ hearts need attention
More people are living with a history of cancer as detection and treatment improve. They also face a significantly higher risk of cardiovascular disease (CVD), even if they never had chemotherapy or radiation. Heart disease is the leading cause of non-cancer death among cancer survivors. Diet is known to help prevent and delay chronic disease, but how healthy eating patterns affect CVD risk after cancer has been unclear. A new study in JACC: Advances, the journal of the American College of Cardiology, set out to look at this. The American College of Cardiology announced the results on October 29, 2026.
Who was studied and how
The researchers analyzed more than 8,700 cancer survivors from the UK Biobank who had no cardiovascular disease at the start. After about 12 years of follow-up, 1,116 of them had experienced a CVD event. The team compared several common healthy dietary patterns to see which one best predicted heart disease and life expectancy.
What they found
Six patterns showed protective associations against cardiovascular events: the Mediterranean diet, the MIND diet, the Alternate Healthy Eating Index-2010, the DASH diet, the Healthful Plant-Based Diet Index and a reversed energy-adjusted dietary inflammatory index. One pattern, a healthy low-fat diet, showed no significant benefit.
Some patterns stood out for specific outcomes:
- Alternate Healthy Eating Index-2010: lower risk of ischemic heart disease and stroke
- DASH: lower risk of heart failure
- MIND: the lowest hazard ratio for death from any cause and the largest gains in life expectancy
Survivors with the highest adherence to a healthy diet gained between 1.66 and 3.32 more years of life expectancy than those with low adherence.
Flexible rather than prescriptive
Senior author Yang-Xin Chen of Sun Yat-sen Memorial Hospital in Guangzhou, China, said the benefits were not limited to one “ideal” diet. They appeared across several evidence-based healthy patterns. He argues this supports a flexible rather than prescriptive approach to nutrition in cancer survivorship care. He also stressed the need to identify prognostic factors that can pinpoint high-risk survivors and guide targeted care in cardio-oncology.
What to keep in mind
This was a prospective cohort study, and the release speaks of associations. It cannot show that a diet itself prevents heart disease or extends life, because people who eat well may differ from others in other ways. The release also does not say how much a diet would help an individual survivor, so personal advice still belongs with the care team.
Source: Healthy diet may lower heart disease risk after cancer, American College of Cardiology, October 29, 2026. Study: “Healthy Dietary Patterns and Incident Cardiovascular Disease in Cancer Survivors: A Prospective Cohort Study,” JACC: Advances.
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