Researchers from Cardiff University have found that the number of younger people being diagnosed with type 2 diabetes has risen sharply over the past 20 years.
The research, published in the Diabetes, Obesity and Metabolism journal, looked at data showing the number of newly diagnosed cases of type 2 diabetes between 1991 and 2010.
The Cardiff team found a significant increase in the overall number of new cases and a marked increase among younger people aged 40 and under.
The research also found that more women under the age of 40 had type 2 diabetes than men in the same age group.
More top news
Homes in parts of Tonypandy and Llwynypia are without water this evening due to a burst water main at Cilfynydd.
Welcome to the Newsweek Quiz - where we'll be testing your knowledge from the last seven days of news here in Wales.
Ospreys lock Lloyd Peers has joked that a change of name after marrying his wife, could mean better fortunes on the pitch.