IT is a shocking new statistic: 4,800 cases of bowel cancer have been caused by obesity in Scotland over the last decade. And the problem is getting worse. In 2005, 10.5 per cent of bowel cancer cases were linked to being overweight or obese, but by 2015, that had crept up to 12.1 per cent. It is another warning sign – another indication of the slow but persistent effect obesity is having on the lives and life expectancy of Scots.

The other signs are just as bad. There was a time when obesity was rare in schools but since 2005, 15 per cent of every primary one class in Scotland has been overweight. These are young people who will very likely grow up to be overweight adults and then have children of their own who will repeat the cycle. More than a quarter of adults in Scotland are already obese and there is every chance that the numbers will continue to rise.

Cancer Research UK’s figures underline the consequences of the trend. Obesity is linked to 13 types of cancer which means that as more of us become obese, more of us will be diagnosed with cancer – a pattern we are already seeing with bowel cancer. Professor Linda Bauld, Cancer Research UK’s cancer prevention expert, says she is hugely worried to see so many bowel cancer cases caused by excess weight and to see that proportion rising as more of the population becomes overweight and obese.

The Scottish Government is developing a new strategy to tackle the problem but if it is to have any chance of success in the long-term, it must focus on prevention rather than cure and it has to be tough on the causes of obesity. That means considering measures such as a sugar tax or restrictions on multi-buy offers on unhealthy foods, as Professor Bauld would like to see.

The strategy will also have to learn the lessons of the long, hard battle against smoking, which means restrictions on advertising, increases in tax on products linked to obesity and education programmes that can change the way we all behave. Obesity is the greatest health crisis of the modern age; tackling it should be one of the Government’s greatest priorities.