Background: Breast cancer-related lymphedema in the upper limb remains one of the most distressful complications of breast cancer treatment. YouTube is considered a potential digital resource for population health and decision making. However, access to inadequate information or misinformation could have undesirable impacts. This cross-sectional study aimed to evaluate the reliability, quality and content of YouTube videos on lymphedema as an information source for Spanish-speaking breast cancer survivors. Methods: A search of YouTube was conducted in January 2023 using the key words “breast cancer lymphedema” and “lymphedema arm breast cancer.” Reliability and quality of the videos were evaluated using the Discern tool, content, source of production, number of likes, comments, views, duration, Video Power Index, likes ratio, view ratio and age on the platform. Results: Amongst the 300 Spanish language videos identified on YouTube, 35 were selected for analysis based on the inclusion and exclusion criteria. Of the 35 selected videos, 82.9% (n = 29) were developed by healthcare or academic professionals and 17.1% (n = 9) by others. Reliability (p < 0.017) and quality (p < 0.03) were higher in the videos made by professionals. The Discern total score (r = 0.476; p = 0.004), reliability (r = 0.472; p = 0.004) and quality (r = 0.469; p = 0.004) were positively correlated with the duration of the videos. Conclusions: Our findings provide a strong rationale for educating breast cancer survivors seeking lymphedema information to select videos made by healthcare or academic professionals. Standardised evaluation prior to video publication is needed to ensure that the end-users receive accurate and quality information from YouTube.

Background: Postpartum depression is a public health problem that affects a considerable percentage of women. Despite the proliferation of related apps, there are limited data available on the best apps to prevent postpartum depression. We identified which apps available in Spanish could be recommended by midwives based on their content, quality, and behaviour change techniques, as a complementary tool for preventing postpartum depression in women. Methods: A systematic search was performed to identify apps available on iOS App Store and Google Play, which were used to replicate how patients’ access “postpartum depression prevention” apps. Apps’ quality, behaviour change potential, and contents were assessed. Results: A total of 1408 apps were identified, of which 7 were retrieved for assessment (0.5%). The mean objective and subject quality were 3.1 (SD = 1.01) and 2.7 (SD = 1.27), respectively. A total of 24 topics were identified. The mean ABACUS score was 6.6 (SD = 3.64), and the mean number of topics addressed by the apps was 9.9 (SD = 5.90). Conclusion: The results of the present study suggest that a specific free app is not available in Spanish for the prevention of postpartum depression, and only a small percentage of free apps should be recommended based on their quality, BCTs, and contents. The systematic review protocol was not registered.

Background: Dietary and physical activity behaviors can influence the development of breast cancer. This study aimed to evaluate the effectiveness of a web-app-based intervention in improving diet and physical activity among women aged 25–45 years residing in northern Spain. Methods: A randomized experimental study was conducted with two groups: an intervention group (IG) and a control group (CG). The Motiva.Diaf questionnaire was used to evaluate the impact of a web-app-based intervention on dietary and physical activity behaviors (range: 0= lowest adherence, 12= highest adherence to healthy behaviors). Women in the IG participated in a 12-week intervention based on the Behavior Change Wheel Model. The web-app provided information on both behaviors. Results: A total of 289 women completed the study (IG =101; CG =188). Considering the combined behaviors for IG (diet and physical activity), between PRE-intervention [8.12; standard deviation (SD) =2.51] and POST-intervention (8.46; SD =2.53), the score was significantly higher in POST [P=0.001; 95% confidence interval (CI): −0.546 to −0.140]. Similarly, significant improvements were observed in specific behavioral recommendations within the IG, with higher scores in dietary behaviors (P<0.001; 95% CI: −0.419 to −0.141), and in physical activity between IG and CG at POST (P=0.04; 95% CI: −0.531 to −0.014). Previous adherence to recommendations was a predictor of POST-intervention adherence to healthy behaviors (Standardized β =0.645; 95% CI: 0.773–0.886; R² =67%). Conclusions: The intervention has proven effective in improving adherence to healthy dietary and physical activity behaviors. Policymakers should prioritize the development of these digital interventions as they can play a crucial role in addressing challenges faced by healthcare systems and meeting societal demands. Therefore, healthcare professionals can implement them. Trial Registration: ClinicalTrials.gov NCT05267171.

Background/Objectives: Energy drinks (EDs) are widely consumed by adolescents despite increasing evidence of adverse health effects. This study aimed to assess ED consumption patterns, risk perception, and associated factors among adolescents in the Principality of Asturias, Spain. Methods: A cross-sectional descriptive study was conducted between January and March 2025 in a sample of 1250 adolescents aged 13–18 years. Data were collected using an anonymous questionnaire assessing frequency and age at initiation of ED consumption, motives and contexts of use, perception of adverse effects, and co-occurrence with other risk behaviors. Descriptive analyses and linear regression models were performed to identify predictors of ED consumption. Results: Overall, 29.6% of participants reported occasional or habitual ED consumption. Consumption was significantly higher among upper secondary school students, particularly in social settings and during study-related activities (p < 0.001). ED consumption was significantly associated with other risk behaviors, including alcohol and tobacco use (p < 0.001). Additionally, 8.6% of adolescents reported that EDs have no adverse health effects. Male sex, alcohol consumption, and tobacco use were the main predictors of ED consumption. Conclusions: A substantial proportion of adolescents consume EDs, with early initiation and increasing consumption with age and educational level. Although some adverse effects are recognized, risk perception remains low. These findings underscore the need for preventive, educational, and regulatory strategies to reduce ED consumption and its normalization among adolescents.