Type 2 diabetes, the body's inability to control blood glucose, is a major and growing public health issue here in New Zealand and across the developed world.
Over 300,000 people are estimated to have the disease here, with around 40 new cases diagnosed every day across the country.
A diabetes diagnosis means you have a chronic condition; there's not really any cure, and if it's not properly managed through medication, diet and other lifestyle changes this can damage your heart, blood vessels, eyes, kidneys, and nerves.
The science journalist, TV presenter and bestselling author Dr Michael Mosley has previously championed intermittent fasting as a way of losing weight and improving your health. His book 'The Fast Diet' became a global bestseller.
In his new book 'The 8-Week Blood Sugar Diet' (Simon and Schuster) he explores how you can try to manage Type 2 diabetes through dieting, without having to resort to drug treatments.