Children's Week is an annual event celebrated in Australia calling for greater action in responding to the plight of millions of children across the globe who are denied basic necessities.

It is also, more simply, about celebrating children's rights, talents and value.

'Children have the right to good quality health care, clean water, nutritious food and a clean environment so that they will stay healthy. Richer countries should help poorer countries achieve this,' is this year's theme.

As Australia's obesity epidemic accelerates and the tiny town of Katherine is named the most overweight and obese place in the nation, the theme could not be more timely.

Home Interaction Program for Parents and Youngsters coordinator Heather Dingle said it was important to highlight the importance of health from a young age.

"It sets up a good foundation for life," she said.

Lovable mascot Healthy Harrold, Katherine's child maternal health nurse, the Smith Family and HIPPY were some of the organisations leading by example today.

From a talk on destructive sugary drinks, to making healthy sandwiches, eating the rainbow and the importance of moving - there was a lot to be learnt.

"The sad reality is junk food is often the cheaper option," Mrs Dingle said.

"And the hardest thing for families if they are time poor are are choosing the quick option.

"The foundations of healthy eating has to start young and in most cases it is exposure to healthy food which is the best way forward."

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