Children are massively exposed to food marketing through television and other forms of media. Marketing strategies promote unhealthy eating behaviours and contribute to childhood obesity. The main aim of this study was to assess the potential exposure and power of food advertisements aimed at children, broadcasted on Portuguese television. Television data was recorded for two weekdays and two weekend days between 6 am and 10 pm during November 2021 from four free-access Portuguese television channels. Data was analysed according to the World Health Organization television protocol and Portuguese Legislation. We identified 5272 advertisements, of which 11.2% were for food and beverages (n = 590). Most advertised food categories for children and adolescents were chocolate and bakery products (42.0%), soft drinks (26.7%), and yoghurt (16.0%), and none met the nutritional profile outlined by the national legislation. Unhealthier food advertisements targeting youth were shown in children’s non-peak time and morning during news and entertainment programmes. Product uniqueness, humour, and fun were the most frequent primary persuasive techniques. Most advertisements showed a high use of brand logos, product images, and premium offers. In conclusion, Portuguese children and adolescents are potentially exposed to large numbers of unhealthy food advertisements on television, despite marketing regulation and restriction policies.

Background and aims: Increased screen exposure is associated with unhealthy eating behaviours and obesity. Screen time (ST) changes from pre-school to school age, and associations with dietary patterns (DP) and obesity remain unknown. We, therefore, analysed ST changes from 4 to 7 years of age, associated factors, and the relation with DP and obesity.Methods and results: We included 4531 children evaluated at 4 and 7 years, as part of the Generation XXI birth cohort (Porto, Portugal). ST was assessed for weekdays and weekend, and average daily time was estimated. Associations between covariates and ST changes, and between ST changes and 3 DP previously identified (Energy-dense foods, Snacking, and Healthier) were estimated by odds ratios (OR) and 95% confidence interval (95%CI), using adjusted multinomial regression models. From 4 to 7 years, 31.5% of the children decreased their ST, 21.8% increased, 16.5% maintained low (<= 60 min), and 30.2% maintained high (61-120 min or >120 min) ST. After adjustment, lower maternal education (OR = 2.33, 95%CI:1.82-2.99) and lower family income (OR = 1.72, 95%CI:1.35-2.21) were associated with higher odds of increasing ST, while being a girl was associated with 35% decreased odds of increasing ST. Children that increased and those that maintained high ST showed greater odds of presenting a Snacking DP at 7 years (OR = 2.34, 95%CI:1.64-3.35) and (OR = 2.65, 95%CI:1.89-3.72), respectively. No statistically significant differences were found regarding changes in ST and the child's BMI. Conclusion: Children increasing screen exposure during this period were more frequently from lower socioeconomic strata and presented unhealthier DP.(c) 2023 The Author(s). Published by Elsevier B.V. on behalf of The Italian Diabetes Society, the Italian Society for the Study of Atherosclerosis, the Italian Society of Human Nutrition and the Department of Clinical Medicine and Surgery, Federico II University. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Background: Corporate political activity (CPA) refers to practices through which commercial actors seek to influence public policy and prioritise their commercial interests. While extensively documented internationally, little empirical evidence exists for Portugal. This study provides the first systematic analysis of the CPA of the food industry in Portugal. Methods: We conducted a systematic document analysis, following a protocol developed by INFORMAS (International Network for Food and Obesity/Non-Communicable Diseases Research, Monitoring and Action Support), a network that monitors food environments. This was triangulated with semi-structured interviews and illustrated through two policy examples. Twenty-five food industry actors were selected based on market share, trade association membership, and relevance to policy debates. Publicly available materials (January 2022–December 2023) were collected and coded using Ulucanlar’s CPA framework, distinguishing framing and action strategies. Data were triangulated with 18 interviews conducted between July and December 2024 with informants from academia, government, industry, civil society, public health, and the media. Results: We identified 534 examples of framing and 799 examples of action strategies. Framing was dominated by portrayals of corporations as "good actors" aligned with health, sustainability, and national development. Action strategies focused on reputational management, corporate social responsibility (CSR), and the displacement of public health roles. Legal obstruction and overtly adversarial tactics were absent. Large multinational manufacturers and major retailers accounted for the highest number of coded CPA examples, with trade associations also represented among actors engaging in policy-related activities. Interviewees confirmed these patterns and expressed concerns over informal access to policy-makers, weak state capacity, and reliance on corporate-led initiatives. Conclusions: The food industry in Portugal primarily relies on reputational and co-regulatory strategies, with limited evidence of overtly confrontational tactics. These findings are consistent with a form of institutionalised influence in which corporate actors engage closely with public authorities and participate in governance processes in ways that may shape the direction and scope of public health policy.