Continuous subcutaneous insulin infusion (CSII) is a therapy for patients with Type-1 diabetes mellitus involving insulin administration via electronic pump. CSII has been shown to reduce HbA1c levels and improve blood sugar control and the continuous, unobtrusive insulin delivery may potentially allow patients increased dietary flexibility and quality of life. However, despite these claims investigatory literature is sparse. This study will clarify whether adult CSII patients experience eating behaviour and quality of life alterations compared to patients using multiple daily injection (MDI) therapy. This is important as differences may be associated with cardiometabolic risk variations; which will also be investigated.