(1) Background: Several governments have enforced a series of actions to improve the local food environment and reduce obesity-related diseases in the population by implementing statutory regulations to reduce or ban the marketing of products that are considered unhealthy based on nutrient profile systems or them being high in fat, sugar, and salt (HFSS); (2) Objective: This narrative review is aiming to provide a comprehensive exploration of the available evidence on the impact of identified mandatory regulations…