Table 1 Inclusion criteria and search terms

Physical access

This dimension relates to the physical availability of healthy food in close proximity to consumers. Examples include policies that encourage healthier diets through public procurement of foods and policies and investments that support diversification and the production of nutrient-rich foods (e.g. fruits and vegetables and legumes)

Key search terms: healthy diet, healthy food, healthy food access, food security

Economic access

This dimension relates to influence of affordability and the price of healthy food. Policy measures under this component might involve making nutritious foods cheaper and unhealthy foods more expensive. Examples include discriminatory trade policies and taxations of unhealthy food options or subsidies on healthy food options like fruits and vegetables

Key search terms: unhealthy food tax, healthy food subsidies, healthy food affordability, trade policy

Promotion, advertising and information

This dimension relates to exposure of consumers to information that will influence their food choices. This might involve limiting the exposure of vulnerable populations such as children to industry driven promotions of unhealthy foods or conducting public health campaigns that promote healthy food habits. Examples include education-based interventions to improve public awareness of healthy dietary behaviours; strengthening regulations for advertising and marketing and increasing transparency of information on labels

Key search terms: Food marketing to children, unhealthy food advertisements to children, healthy food choices