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Meta-analysis of 13 randomized trials reveals non-pharmacological interventions reduce chemotherapy-induced taste disorders by 28% in cancer patients

International journal of nursing studies (PubMed)Aug 14, 2026

AI-summarized from the linked source. Educational brief, not medical advice.

Brief summary

A systematic review and meta-analysis of 13 randomized controlled trials including 1,049 cancer patients found that non-pharmacological therapies significantly reduced the incidence of chemotherapy-induced taste disorders (RR: 0.72) and improved perceived taste alterations.

What NurseJet pulled from the source

Chemotherapy-induced taste alterations (dysgeusia) affect up to 70% of oncology patients, contributing to malnutrition, severe anorexia, and diminished quality of life. This systematic review and meta-analysis synthesized 13 randomized controlled trials encompassing 1,049 cancer patients across eight electronic databases (PROSPERO CRD420261348257). Investigators evaluated five distinct non-pharmacological interventions: oral cryotherapy (ice chips), photobiomodulation therapy, traditional Chinese medicine-based modalities, dietary and nutritional education, and psycho-educational support. Non-pharmacological interventions significantly reduced the overall incidence of taste disorders compared to control care (risk ratio [RR]: 0.72; 95% CI: 0.61–0.86; 12 trials pooled) and significantly alleviated subjective severity of perceived taste alterations (standardized mean difference [SMD]: -1.21; 95% CI: -1.78 to -0.63). Objective taste testing confirmed significant improvement in salty taste threshold sensitivity (SMD: 0.84; 95% CI: 0.56–1.12). Subgroup analysis indicated dietary/nutritional interventions produced a 46% reduction in taste disorder incidence (RR: 0.54; 95% CI: 0.32–0.91), while oral cryotherapy exerted a substantial benefit on perceived symptoms (SMD: -1.62; 95% CI: -3.16 to -0.07).

Why this matters for nurses

Oncology nurses routinely care for patients who experience severe metallic, bitter, or blunted taste sensations during chemotherapy cycles, frequently leading to poor oral intake and cachexia. Having high-level meta-analytic evidence supporting accessible, low-risk non-pharmacological interventions—such as oral cryotherapy during infusions and structured dietary flavor adjustments—empowers bedside nurses to offer immediate, evidence-grounded symptom management.

Bedside takeaway

In a meta-analysis of 13 RCTs (1,049 cancer patients), non-pharmacological care significantly reduced chemotherapy taste disorder incidence (RR 0.72, 95% CI 0.61–0.86) and improved perceived symptom scores (SMD -1.21).

Key takeaways

  • Meta-analysis synthesized 13 randomized controlled trials involving 1,049 cancer patients receiving chemotherapy.
  • Non-pharmacological modalities significantly reduced the incidence of taste disorders by 28% (RR: 0.72, 95% CI: 0.61–0.86).
  • Perceived severity of taste alterations improved substantially across treated cohorts (SMD: -1.21, 95% CI: -1.78 to -0.63).
  • Oral cryotherapy showed pronounced relief for perceived alterations (SMD: -1.62), while dietary strategies halved taste disorder risk (RR: 0.54).
  • Objective sensory testing demonstrated significant preservation of salty taste perception (SMD: 0.84, 95% CI: 0.56–1.12).

Practice implications

  • Offer ice chips for oral cryotherapy during rapid-infusion chemotherapy agents known to cause mucositis and dysgeusia; educate patients on seasoning food with lemon, tart marinades, and plastic utensils to counter metallic dysgeusia.

Limitations & cautions

  • Heterogeneity in intervention protocols and measurement tools across the 13 RCTs; small sample sizes in select trial arms; blinding of dietary or cryotherapy interventions was generally not possible.
  • AI-summarized from the linked source. Review the original article before applying to practice.

Citations

Exact source links

Public citations are filtered to exact credible source pages. Homepage-only or invalid links stay in admin review and are not shown here.

International journal of nursing studies (PubMed)

International journal of nursing studies (PubMed). Effects of non-pharmacological interventions on chemotherapy-induced taste alterations among cancer patients: A systematic review and meta-analysis.

Open original source

https://pubmed.ncbi.nlm.nih.gov/42731479/

Professional education only

This summary does not replace clinical judgment, facility policy, provider orders, or official guidelines. Verify practice changes against the original source and local protocol.

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