The world is facing an “unrelenting march” of diabetes which now affects nearly one in 11 adults, the World Health Organization (WHO) says.

In a major report it warned cases had nearly quadrupled to 422 million in 2014 from 108 million in 1980.

High blood sugar levels are a major killer – linked to 3.7 million deaths around the world each year, it says.

And officials said the numbers would continue to increase unless “drastic action” was taken.

Taiwan National Day Celebration