In one of the largest studies to date of diabetes trends, the researchers said ageing populations and rising levels of obesity across the world mean diabetes is becoming "a defining issue for global public health".
Type 2 diabetes is a long-term condition characterized by insulin resistance. Patients can manage their diabetes with medication and diet, but the disease is often life-long and is a major cause of blindness, kidney failure, heart attacks, stroke and lower limb amputation.
"Obesity is the most important risk factor for type 2 diabetes and our attempts to control rising rates of obesity have so far not proved successful," said Majid Ezzati, a professor at Imperial College London who led the WHO research.
Published in The Lancet journal ahead of the United Nations World Health Day on April 7, the study used data from 4.4 million adults in different world regions to estimate age-adjusted diabetes prevalence for 200 countries.
It found that between 1980 and 2014, diabetes has become more common among men than women, and rates of diabetes rose significantly in many low and middle income countries, including China, India, Indonesia, Pakistan, Egypt and Mexico.
Margaret Chan, the WHO's director-general, said the findings showed an urgent need to address unhealthy diets and lifestyles around the world.
"If we are to make any headway in halting the rise in diabetes, we need to rethink our daily lives: to eat healthily, be physically active, and avoid excessive weight gain," she said in a statement from the WHO's Geneva headquarters.
"Even in the poorest settings, governments must ensure that people are able to make these healthy choices and that health systems are able to diagnose and treat people with diabetes."
The study found that northwestern Europe has the lowest rates of diabetes among women and men, with age-adjusted prevalence lower than 4 percent among women and at around 5 to 6 percent among men in Switzerland, Austria, Denmark, Belgium and the Netherlands.
No country saw any meaningful decrease in diabetes prevalence, it found.
For decades we have been told saturated fats are a health hazard, these are the fats man has ate for thousands of years, some from the beginning of the human race. Saturated fat is found in meat, fish, eggs, butter etc. and many other natural whole foods. The mainstay of official dietary guidelines across the world, and continues to the present day, has been to reduce saturated fats and increase carbohydrates. This equates to eat less fat and eat more sugar. How many people realise all carbohydrates turn to sugar once digested.
For a very detailed description, outlining why the Eatwell guide is anything but a healthy diet, please visit the site of Dr. Zoe Harcombe PhD here.