Neutropenic Diet Offers Little Advantage Over a Liberalised Diet in Cancer: JCO Oncology Practice | 2026

Introduction:

The neutropenic diet traditionally restricts fresh fruits, vegetables, and other foods considered potential sources of infection in immunocompromised patients. Despite widespread historical use, whether these restrictions actually prevent infections remains uncertain.

Why was this study needed?

Neutropenic diets can reduce food variety, nutritional intake, and quality of life.

Practices vary considerably between oncology centres.

Recent HSCT studies have renewed debate about liberalized diets.

Better evidence is needed to identify patients who genuinely benefit from dietary restriction.

Key Findings:

15 studies involving 4,320 patients were included.

Neutropenic diet did not reduce major infections compared with a liberalized diet.

There was no overall reduction in bacteremia/fungemia, pneumonia, diarrhea, or mortality.

Results remained similar when analysis was restricted to randomized trials.

Among hematologic malignancy/HSCT patients overall, outcomes were also similar.

However, RCTs limited to these high-risk patients showed lower bacteremia/fungemia with neutropenic diet (RR 0.67).

This subgroup signal did not translate into improvements in other clinical outcomes.

Bottom Line:

Routine neutropenic diets appear unnecessary for most patients with cancer and short-term neutropenia. A more cautious approach may still be reasonable in selected HSCT or prolonged high-risk neutropenia patients.