Nutritional support and intervention is an integral component of head and neck cancer management. Patients can be malnourished at presentation, and the majority of patients undergoing treatment for head and neck cancer will need nutritional support. This paper summarises aspects of nutritional considerations for this patient group and provides recommendations for the practising clinician.Recommendations• A specialist dietitian should be part of the multidisciplinary team for treating head and neck cancer patients throughout the continuum of care as frequent dietetic contact has been shown to have enhanced outcomes. (R)• Patients with head and neck cancer should be nutritionally screened using a validated screening tool at diagnosis and then repeated at intervals through each stage of treatment. (R)• Patients at high risk should be referred to the dietitian for early intervention. (R)• Offer treatment for malnutrition and appropriate nutrition support without delay given the adverse impact on clinical, patient reported and financial outcomes. (R)• Use a validated nutrition assessment tool (e.g. scored Patient Generated–Subjective Global Assessment or Subjective Global Assessment) to assess nutritional status. (R)• Offer pre-treatment assessment prior to any treatment as intervention aims to improve, maintain or reduce decline in nutritional status of head and neck cancer patients who have malnutrition or are at risk of malnutrition. (G)• Patients identified as well-nourished at baseline but whose treatment may impact on their future nutritional status should receive dietetic assessment and intervention at any stage of the pathway. (G)• Aim for energy intakes of at least 30 kcal/kg/day. As energy requirements may be elevated post-operatively, monitor weight and adjust intake as required. (R)• Aim for energy and protein intakes of at least 30 kcal/kg/day and 1.2 g protein/kg/day in patients receiving radiotherapy or chemoradiotherapy. Patients should have their weight and nutritional intake monitored regularly to determine whether their energy requirements are being met. (R)• Perform nutritional assessment of cancer patients frequently. (G)• Initiate nutritional intervention early when deficits are detected. (G)• Integrate measures to modulate cancer cachexia changes into the nutritional management. (G)• Start nutritional therapy if undernutrition already exists or if it is anticipated that the patient will be unable to eat for more than 7 days. Enteral nutrition should also be started if an inadequate food intake (60 per cent of estimated energy expenditure) is anticipated for more than 10 days. (R)• Use standard polymeric feed. (G)• Consider gastrostomy insertion if long-term tube feeding is necessary (greater than four weeks). (R)• Monitor nutritional parameters regularly throughout the patient's cancer journey. (G)• Pre-operative:○ Patients with severe nutritional risk should receive nutrition support for 10–14 days prior to major surgery even if surgery has to be delayed. (R)○ Consider carbohydrate loading in p...

It is essential that patients and care-givers attend pretreatment clinics to discuss nutritional support via the artificial route; their quality of life can be enhanced if guided through a specialist support pathway based at the clinical site where they initiated their care, with links to key agencies.

Using a wiki platform for guideline development and dissemination is a successful method for producing high-quality resources that can undergo wide international stakeholder review and include open public consultation. This can replace conventional methods whereby guidelines can quickly become outdated.

The decision for timing of gastrostomy placement should be made at diagnosis given the benefits of prophylactic tube feeding. Accountability for insertion and removal of gastrostomies with alignment of services will facilitate risk assessment, appropriate placement, effective patient counselling and monitoring for major and minor complications. Nutritional outcomes need to be distinguished from swallowing and QOL measures and evaluated to include effects on nutritional status, gastrostomy complications, intensity and frequency of dietetic support and effect on survival.