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Life sciences · Journal article
Frontiers in Public Health · September 18, 2026
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Older women with cancer face overlapping risks of malnutrition, sarcopenia, frailty, treatment toxicity, functional decline, and dependence on long-term care. Medical nutrition therapy (MNT) can translate nutrition screening into individualized dietary counseling, symptom-responsive support, oral nutritional supplements, and enteral or parenteral nutrition when clinically indicated. Yet access is strongly conditioned by health insurance design. Eligibility restrictions, cost sharing, limited dietitian networks, fragmented authorization, and discontinuity between hospital, home, and long-term care can delay treatment until nutritional impairment is advanced. This targeted narrative Mini Review of selected high-income countries examines MNT coverage as a comparative health-policy and survivorship-equity issue for older women with cancer. We synthesize evidence linking nutrition impairment and frailty to quality of life, treatment tolerance, and survival; compare selected policy approaches in the United States, Australia, and the United Kingdom within broader universal health coverage and long-term care frameworks; and propose a conceptual, hypothesis-generating insurance-to-function framework linking coverage to access, nutrition care, and potential preservation of muscle reserve and independence. We propose that MNT be treated as an essential, risk-stratified component of oncology and long-term care rather than an optional wellness service. Proposed policy priorities include coverage triggered by validated nutrition and geriatric assessments, reimbursement for dietitian-led care and clinically indicated nutrition products, continuity across care transitions, integration with food and financial assistance, and equity-sensitive outcome monitoring.