TYPE-2 DIABETES THE FACTS

More than 2.8 million Britons have been diagnosed with the condition, according to research from Cardiff University, compared with 700,000 two decades ago, but many more may be living with it unknowingly.

Danish research suggests one in eight people worldwide will have the disorder by 2045.

Although it is linked to obesity, around five per cent of people with type-2 diabetes are a healthy weight.

Having a family member with the condition increases the chance of getting it, as there may be a genetic link.

Stress can be a factor, particularly if it disturbs sleep, as it increases levels of the hormone cortisol.

If the condition goes undiagnosed, the production of excess insulin can increase the risk of heart attack or stroke.