SIR - I am writing to let your readers know about World Cancer Research Fund's new healthy lifestyle website for children aged four to seven.

The Great Grub Club website is a great way of getting across the healthy lifestyle message to children in a fun way, through competitions, games and activities.

Funded by the Department of Health, it has been launched in response to the rising obesity levels in young people.

We believe it is vital to get children into good habits early in life, as the sooner people embrace healthy living habits the better.

This is so important because research shows that up to 40 per cent of cancers could be prevented just by eating a healthy diet and being physically active.

I would urge all your readers with children around this age to get them to check out the site at www.greatgrubclub.com.

Lisa Cooney, Head of Education, World Cancer Research Fund, Harley Street, London