Growing evidence makes clear that multiple, complex factors beyond personal decisions strongly influence dietary choices and patterns

Even at the individual level, dietary habits are determined by personal preference and also age, gender, culture, education, income, health status, and nutritional and cooking knowledge and skills.8 Psychological influences include attitudes to food and health, incentives, motivation, and values.
Broader sociocultural determinants of personal choices include household lifestyle patterns such as television watching and sleep, family and community norms, social pressures, social class, social networks, and race/ethnicity.
The local environment also plays an important role
Food preferences may also be influenced by early life exposures, including the mother’s diet during pregnancy, infant feeding practices, and foods consumed in early childhood.
Importantly, wider commercial pressures also affect consumer choice, including food packaging, marketing, advertising, and sociocultural perceptions of norms, status, and prestige.
Each of these individual determinants is shaped by, and in turn shapes, much broader drivers of food choice such as food industry formulations and globalisation, farming policy and production practices, national and international trade agreements, and ecosystem influences
Classification of policy interventions

Level—city, state, or national government; international agencies; organisations (eg, school, worksite, healthcare facility); local neighbourhoods and communities

Target—consumer, organisation (eg, school, worksite), health system, production (farming, agriculture), industry (manufacturer, retailer, restaurant)

Domain—population education (eg, dietary guidelines, mass media), point-of-purchase information, fiscal policies, food quality standards, built environment changes, research and innovation

Mechanism—altering consumer preferences or choice, food formulations, or food availability and accessibility
Governments have a duty to ensure that interests not in the public good do not influence the individuals or institutions responsible for public decision making, and preserving integrity and public trust.