Healthiness of food products promoted through placement strategies in Australian online supermarkets: a cross-sectional study.

A considerable number of unhealthy products are likely presented to online grocery shoppers in Australia. Public health policies targeting unhealthy food promotions may need to be updated, including with consideration of the different ways that products can be prominently displayed online, to avoid exacerbating risks of diet-related disease and health inequalities. Our novel methodology could be used for ongoing monitoring of online supermarkets in Australia and elsewhere to inform such policies.