What an Italian Study Found About Mediterranean Eating After Cancer

The diet scores and later death records pointed in the same direction: closer Mediterranean-diet adherence was associated with lower overall mortality in an Italian survivor study published in 2024.

Cardiovascular deaths were part of that finding. Cancer treatment was not being tested, and the study did not establish a cure, prevention of recurrence or an alternative to ongoing care.

The Researchers Followed 802 Survivors

The research letter in JACC: CardioOncology used participants from the Moli-sani cohort in southern Italy. After exclusions, the analysis included 802 people with a history of cancer.

Their diet was assessed after diagnosis. This was research among survivors, rather than a trial testing a diet as a way to treat a newly diagnosed cancer.

Eating Patterns Received a Score

Participants answered an interviewer-administered questionnaire about food intake during the preceding twelve months. Researchers used a Mediterranean diet score to group adherence as poor, average or high.

They weren't assigning everyone a strict menu and monitoring compliance. The score summarized reported eating habits, with the usual limitations of recalling and reporting what one eats.

Follow-Up Lasted About Thirteen Years

The average follow-up was 12.7 years. Researchers recorded deaths and their causes through registry information and death certificates.

The study could therefore examine all-cause, cardiovascular and cancer mortality separately. Those outcomes answer different questions; a finding for deaths from all causes doesn't automatically establish a reduction in deaths from cancer itself.

The Overall Association Was Encouraging

The high-adherence group had an adjusted all-cause mortality hazard about 32% lower than the poor-adherence group. Hazard is a relative comparison over follow-up, not a percentage-point reduction in one person's chance of dying.

Statistical adjustment accounted for several differences between participants. It could not turn the comparison into a randomized experiment.

Cardiovascular Mortality Stood Out

The researchers recorded 59 cardiovascular deaths during follow-up. Higher Mediterranean-diet adherence was associated with a lower estimated hazard, although the confidence interval was wide.

This result concerns diseases of the heart and blood vessels. It doesn't show that one ingredient prevented a particular person's illness.

Cancer Deaths Had a Different Result

The study did not establish a statistically significant reduction in cancer-specific mortality. That is part of the result, rather than a detail to leave out of a promising headline.

It doesn't prove diet has no role in survivorship. It means this analysis did not demonstrate that particular outcome in the people it followed.

A Dietary Pattern Includes Many Foods

Vegetables, fruit, whole grains, olive oil, nuts and fish appear in the American Cancer Society's description of Mediterranean eating.

That is a pattern across foods. The study didn't isolate one ingredient as the reason for the association, or test a supplement as a replacement for meals.

The Groups Also Differed in Other Ways

Higher adherence went along with greater physical activity and higher socioeconomic status. Diet wasn't the only difference between the groups.

Adjustments can address measured factors, but other influences may remain. The comparison doesn't supply a personal forecast for every cancer type, treatment history or nutritional need.

Discuss Changes With the Care Team

The American Cancer Society advises checking possible benefits and risks with a doctor before trying the eating pattern. Individual nutritional needs belong in that discussion.

The research concerns longer-term health after cancer, including cardiovascular health. It isn't a promise of recovery through a strict menu or a replacement for ongoing care.