There are currently more than 3.8 million people with diabetes in the UK. It is estimated that around a further 500,000 adults have Type 2 and don't know it. Globally, diabetes affects more than 415 million people and it is estimated that this will grow to 640 million by 2040. For every 10 people with diabetes, 1 (10%) has Type 1 which is unpreventable. The remaining 9 (90%) people have Type 2 which in many cases can be prevented.