"More than four million people in the country will be diagnosed as diabetic by 2025, researchers estimate.
The majority are expected to develop the disease needlessly because of lifestyle factors such as obesity, the charity Diabetes UK warns.
Around 80 per cent of those diagnosed with Type 2 diabetes, the most common kind, are overweight.
But Diabetes UK warns that diabetes can also lead to extremely serious complications including heart disease, blindness, kidney disease and amputation.
The NHS already spends around £10,000 per minute treating diabetes and its complications, the charity estimates.
Simon O'Neill, from Diabetes UK said: "We should be worried about this predicted diabetes explosion.
"These new figures are truly shocking and confirm that diabetes is one of the main health challenges facing the UK today.
"Awareness and prevention are crucial if we want to avert this future health crisis and see the number of people with Type 2 diabetes fall.
"We need to encourage people to reduce their risk of developing the condition by eating healthily, maintaining a healthy weight and leading an active lifestyle.""
" The figures were released to mark the start of Diabetes Week, which aims to highlight risk factors for the disease, and are based on calculations derived from a study into the prevalence of diabetes by Yorkshire and Humber Public Health Observatory."
The trouble is, people are not being given the facts about what causes type 2 diabetes. - The main cause of type 2 diabetes is fluid retention, and the way to reduce fluid retention is to cut down on salt and salty food.
Lose weight, reduce your risk of most cancers, high blood pressure, type 2 diabetes, stroke, heart disease, angina, vascular dementia, osteopenia, osteoporosis, hypercholesterolaemia, depression, liver and kidney problems, and improve your health in many other ways without drugs or expense by eating less salt! - Try it! - You will feel so much better!Obesity and the Salt Connection
Children and Obesity