Type 1 diabetes is an autoimmune condition where circulating immune cells destroy the beta-cells in the pancreas that make insulin, resulting in a degree of insulin deficiency, whereby blood glucose levels rise and diabetes develops. When there is severe insulin deficiency, life-threatening ketoacidosis can develop. Treatment is lifelong insulin replacement therapy; dietary intervention is a also cornerstone of glucose management.

The Optimise Diet is a multi-pronged diet based on "best health" principles: to minimise blood glucose rises after eating, reduce the immune cells involved in destruction of the insulin-secreting beta-cells, and improve the gut microbiome and systemic inflammation. In this study, its effects will be compared to the Standard Diabetes Diet that is currently recommended in Australia and internationally.

The rationale for this study is to determine whether a diet based on recent scientific advances in diet-induced inflammation, will improve diabetes care in people with type 1 diabetes.

Inclusion Criteria:

• type 1 diabetes

Exclusion Criteria:

• Women lactating, pregnant or of childbearing potential who are not willing to avoid becoming pregnant during the study.