The effects of personality, motivation and self-efficacy on very low-calorie diet in type 2 Diabetes

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Diabetes is a major public health issue worldwide. In the UK, the health expenditure associated withdiabetes is estimated to cost the NHS £10 billion per year. Weight loss through a very low-calorie diet(800 calories a day) has shown great results in the management of type 2 diabetes. However, thetreatment is not always successful, with many patients finding it difficult to maintain. The reasons for thisare unclear, but research suggests that personality and motivation may be key factors to understandingwhy some patients can sustain the diet and others not.This PhD project will focus on assessing the impact of personality traits and motivation when adopting avery low-calorie diet in type 2 diabetes care. The project will recruit participants from Southern HealthNHS foundation trust diabetes service who have been diagnosed with type 2 diabetes. As part of theircare they will be starting a very low-calorie diet and will be followed up for a 1-year period. The keyoutcome measures will be changes in body weight and glucose levels, investigating the impact ofpersonality and motivation on adherence.Overall this project will employ a mixed-methods design to assess the impact of personality andmotivation on adherence to very low-calorie diets. This will be a longitudinal cohort study that alsoexplores qualitatively participants' experience of a low-calorie diet and barriers to success. The resultswill be used to develop further interventional trials which will aim to personalise dieting and support tothose with type 2 diabetes.