Association of daily diet and incidence of head and neck cancer: a prospective cohort study of UK biobank participants

The association between daily diet and head and neck cancer (HNC) remains unclear. This cohort study analyzed UK Biobank (UKB) data (2006-2021, n = 480,577) using Cox proportional hazards models to evaluate the associations between daily diet and incident HNC and its subtypes: laryngeal cancer (LC), oral cancer (OC), and oropharyngeal cancer (OPC). This large prospective study identified significant dietary associations with head and neck cancer (HNC) risk during 11.8 years of follow-up. Protective associations emerged for moderate dried fruit consumption (Hazard Ratio (HR) = 0.77-0.81), daily milk intake (> 299 mL/day, HR = 0.71), and regular coffee drinking (HR = 0.77-0.84). Conversely, elevated risks were observed with frequent red meat (≥ 4 times/week, HR = 1.20), non-oily fish (≥ twice/week, HR = 1.45), refined grains (≥ 3 bowls or slices/week, HR = 1.14), and habitual salt addition (HR = 1.21). Subtype-specific patterns include the protective effects of whole grains and vegetables against laryngeal cancer and reduced oral cancer risk with limited poultry consumption. Notable variations were observed in sex (sex-specific milk/oily fish effects), age (differential fruit/vitamin impacts), and BMI (heightened red meat risk in normal-weight individuals). Our findings demonstrated significant associations between dietary patterns and HNC risk, identifying both protective and risk-enhancing food components. These results highlight the potential of dietary interventions in HNC prevention, with varying effects across cancer subtypes and demographic groups.