The Healthy Lifestyle Index (HLI) is the first tool of its kind to be rolled out nation-wide in the world. Available online in all four official languages for anyone aged 18 and above, the index is in the form of a quick and easy to use questionnaire of ten questions, each covering one of the following ten health domains: Body Mass Index (BMI); physical activity; diet; smoking; alcohol; sleep; stress; depression; social/emotional support and health screenings. The index seeks to assess the overall health behaviour of the participant and is developed to provide advice and recommendations on appropriate HPB programmes to support the individual participant and help improve health behaviours.