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Surgeon sees obesity on the streets of Swansea

5 August 2014 Last updated at 07:06 BST

A leading surgeon claims the NHS in Wales risks "falling apart" unless it tackles the cost of treating chronic diseases associated with obesity.

Jonathan Barry, who runs Wales' only specialist centre at Morriston Hospital in Swansea, is only authorised to carry out 67 bariatric operations a year to help morbidly obese patients but has the capacity to do more than 300.

There are plans to increase the number of operations from 80 to 300 a year by 2018, but health officials say cost is a major issue.

Tim Rogers of BBC Wales' Week In Week Out took Mr Barry on a walk in the centre of Swansea to see how big a problem obesity is.