There are three level II positive quality studies  that demonstrate an improvement in patient-centred outcomes such as quality of life, and improved nutritional intake and nutritional status following dietetic counselling for head and neck patients receiving radiotherapy, both during and post treatment. A pseudo randomised controlled trial, level III-1 neutral quality  also reported similar findings with less weight loss and malnutrition following individual dietetic counselling compared to standard care. The UK National Institute for Health and Clinical Excellence publication “Guidance on Cancer Services: Improving Outcomes in Head and Neck Cancers –The Manual” recommends a specialist dietitian as a core member of the multidisciplinary team .
A level III-3 neutral quality study  found that patients undergoing an early nutrition intervention program, including dietetic contact pre, during and post radiotherapy, had improved outcomes in terms of less weight loss, fewer treatment interruptions and less unplanned admissions. One paper  (level III-3, neutral quality) describes the effect of an integrated care program including a dietitian role pre, during and post treatment, which resulted in an 82% increase in patients receiving nutrition support for oral and oropharyngeal cancers. A level III-3 neutral quality study describes the positive outcomes of when a dietitian is present in a multidisciplinary team i.e. patients are more likely to receive pre-treatment dietetic intervention, nutrition guidelines or recommendations are more likely to be followed and the patient is more likely to receive follow up post treatment . Another level III-3 neutral quality study found that nutritional management in a dietitian-led clinic was associated with reduced nutrition-related admissions, fewer unplanned nasogastric tube insertions, improved transition to oral diet post-radiotherapy, and reduced need for medical follow-up during the immediate post-treatment period . One level IV neutral quality qualitative paper  indicates that there is a patient need for intervention and support throughout the continuum of care. Another Level IV neutral quality paper  also supports the need to prepare patients for the post treatment phase and the slow recovery from side effects. The significance of eating problems needs to be acknowledged and the impact this has physically, emotionally and socially.
|A dietitian should be part of the multidisciplinary team for treating patients with head and neck cancer throughout the continuum of care, as frequent dietitian contact has been shown to improve nutrition outcomes and quality of life.||A|
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