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ArticleSupportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer2026

'I have to drink it to survive': patients' experiences and barriers to adherence to oral nutritional supplements in cancer care: a qualitative study.

Fatma Tamer, Sevgisun Kapucu, Burcu Kelleci, Şeniz Öztürk

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Article in Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

4 authors.

Fatma TamerClinical Nutrition Unit, Hacettepe University Hospitals, Ankara, Turkey. fatmatamer06@gmail.com.ORCID http://orcid.org/0000-0002-1449-2881
Sevgisun KapucuFaculty of Nursing, Department of Medical Nursing, Hacettepe University, Ankara, Turkey.ORCID http://orcid.org/0000-0003-3908-3846
Burcu KelleciFaculty of Pharmacy, Department of Clinical Pharmacy, Hacettepe University, Ankara, Turkey.ORCID http://orcid.org/0000-0003-2547-8919
Şeniz ÖztürkDepartment of Nutrition and Dietetics, Hacettepe University Hospitals, Ankara, Turkey.ORCID http://orcid.org/0000-0002-4044-0743

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeAlthough oral nutritional supplements (ONSs) are widely prescribed to combat cancer-related malnutrition and enhance treatment outcomes, patient adherence is often inadequate. This study aims to examine patient-reported barriers and facilitators to ONS use in cancer care, with the goal of supporting healthcare professionals in developing patients' nutritional strategies.

methodsA qualitative study was conducted. Between November 2023 and August 2024, semistructured interviews were conducted with 20 purposively selected cancer patients until data saturation was achieved. The health belief model (HBM) guided data collection and interpretation. Adherence patterns were derived from participants' self-reports. Data were analyzed using a two-stage approach: inductive, experience-oriented thematic analysis followed by theory-informed mapping of finalized themes onto HBM constructs.

resultsSixteen themes were identified reflecting perceptions of ONS use. Participants perceived their adherence as suboptimal and described inconsistent consumption of prescribed supplements. While participants acknowledged that poor nutritional intake could compromise recovery, barriers were prominent. These included unpleasant taste and odor, gastrointestinal side effects, sensory fatigue from limited flavors, misconceptions such as "sugar feeds cancer," and inadequate professional guidance. Barriers were shaped by individual health beliefs, emotional responses, and contextual support systems. Facilitators included motivation for recovery, family support, and supportive interactions with healthcare professionals.

conclusionAdherence to ONS among cancer patients is influenced by multifaceted factors extending beyond medical prescription. Addressing misconceptions, improving palatability and product variety, and strengthening professional and psychosocial support may enhance adherence. Tailored interventions guided by patient beliefs and experiences are essential to optimize nutritional outcomes during cancer treatment.

Indexed as

Dietary SupplementsMalnutritionNeoplasmsPatient ComplianceAdministration, OralAdultAgedFemaleHealth Knowledge, Attitudes, PracticeHumansMaleMiddle AgedQualitative ResearchAdherenceCancerOral nutritional supplementsPatient experiencesQualitative research

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.