Food Advertising to Children in New Zealand: A Critical Review of the Performance of a Self-Regulatory Complaints System Using a Public Health Law Framework

New Zealand has the second highest overweight and obese child population in the Organisation for Economic Co-operation and Development (OECD). This paper evaluates whether New Zealand’s self-regulatory controls on the advertising of unhealthy food and beverages to children and young people adequately protects children from the exposure to, and power of, such marketing in order to limit its impact on children’s food and beverage preferences. First, an analysis of the relevant New Zealand Advertising Standards Authority (ASA) Codes was conducted, including the ASA Complaints Board and Appeals Board decisions from 2017–2019 to determine the application of the Codes in practice. Second, a public health law framework was applied to the self-regulatory system. Of the 16 complaints assessed, 12 were not upheld, and only one was upheld under the Children and Young People’s Advertising Code (CYPA Code). Three complaints were upheld under the Advertising Standards Code (ASC) but not the CYPA Code. An analysis of the Codes and their interpretation by the Complaints Board found that many facets of the public health law framework were not met. The self-regulatory system does not adequately protect children from the exposure to, and power of, unhealthy food and beverage marketing, and government-led, comprehensive, and enforceable marketing restrictions are required.