One third of us think that we are overweight
Almost one third of people in Ireland think they are overweight.
Figures published ahead of World Diabetes Day revealed that 34pc of women think they are carrying extra weight compared with a quarter of men.
People aged between 50 to 64 years are also more likely to believe they are heavier than average.
The data, released by pharmaceutical firm Novo Nordisk, highlighted the link between body weight and diabetes, a condition which will be recognised worldwide on Saturday.
Professor John Nolan, consultant endocrinologist at St James's Hospital, said four out of five people with diabetes are overweight. "The number-one risk factor for type 2 diabetes is obesity," said Mr Nolan.
"Greater weight means a higher risk of insulin resistance, because fat interferes with the body's ability to use insulin.
"If your insulin is not working correctly, you cannot regulate the sugar in your blood and this can develop into diabetes."
The medic said that while overweight people over the age of 40 are at risk of developing diabetes, even a small amount of weight loss can make a big difference.
"If people lose just 5 to 7pc of their body weight, they reduce the risk of developing diabetes."