New research shows the "shocking" amount of gambling, alcohol, and junk food ads kids are exposed to on a daily basis.

An Otago University study -funded by the Cancer Society- had 122 children in the Wellington region wear body cameras for four days - taking photos every seven seconds.

Senior author Professor Louise Signal says there are few places children could escape the harmful messaging.

She says kids see three gambling ads, two alcohol ads, and nine junk food ads in outdoor spaces everyday - so if we're trying to create a healthy environment for them, we're failing.

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