Around one in four Scottish adults are in need of obesity treatment and many more are overweight, new figures have revealed.
According to statistics for 2008 disclosed by public health minister Shona Robison, 66.3 per cent of 16 to 64-year-old men and 59.6 per cent of women in the same age group were overweight.
The MSP also revealed that 24.9 per cent of men and 26.5 per cent of women were obese last year, while more than one-third of boys and one-quarter of girls aged two to 15 could do with losing weight.
Conservative public health spokesman Jackson Carlaw said that Scotland needs a "complete change of culture" to deal with its obesity "epidemic".
"This problem did not appear overnight, nor will it disappear overnight," he argued.
Ms Robison said that the Scottish government views obesity as a "high priority" and has implemented a range of initiatives to tackle the problem.
The revelation follows a British Heart Foundation report that claims parents are failing to recognise their children's low levels of physical activity.