Cost of obesity 'greater than war and terrorism'

Obesity is now reaching "crisis proportions" according to a new study.

The McKinsey Global Institute said it cost £1.3tn, or 2.8% of annual economic activity - it cost the UK £47bn.

It suggests that it is about the same as smoking or armed conflict and greater than both alcoholism and climate change.

The BBC's Health Editor Hugh Pym reports.

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