IL10 and food allergy: Tregs are important immune regulators, having the ability to suppress inflammatory responses and promote allergen tolerance through a range of actions including the secretion of anti‐inflammatory cytokines, such as IL‐10.8, 44 An absence of Tregs is a key issue in those with food allergies, with low Tregs and IL‐10 exacerbating hypersensitivity.8, 45 The relationship between vitamin D levels and Tregs is unclear.