Abstract
<jats:p>Diabetes mellitus is a metabolic disorder characterised by chronic hyperglycaemia resulting from defects in insulin secretion, insulin action or both. In addition, both impaired glucose tolerance (IGT) and increased fasting glucose have been identified as risk factors for developing diabetes, and IGT as a risk factor for cardiovascular disease. Whilst there is no evidence for the lifestyle prevention of type 1 diabetes, the aetiology remains unclear beyond its autoimmune nature. Components of lifestyle interventions for prediabetes and type 2 diabetes prevention include weight reduction, physical activity and diet. The chapter also presents a list of situations that may impact the ability of a person living with or at risk of developing diabetes that need to be considered when formulating a nutritional plan. Individuals living with any type of diabetes may encounter various unique situations where standard dietary and insulin management approaches need to be adjusted.</jats:p>