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Background: Childhood obesity has become a major global epidemic that causes substantial social and health burdens worldwide. The effectiveness of childhood obesity control and prevention depends largely on understanding the issue, including its current development and associated factors in a contextualized perspective. Objectives: Our study aimed to gauge this kind of understanding. Methods: We systematically searched the Web of Science database for studies concerning child obesity published up to 2017 and analyzed the volume of publications, growth rates, impact scores, collaborations, authors, affiliations, and journals. A total of 57,444 research papers were included. Results: The three subject categories with the highest number of papers (over 3,000) were (1) nutrition and dietetics, (2) pediatrics, and (3) public, environmental, and occupational health. We found a dramatic increase in the amount of scientific literature on childhood obesity in the past one or two decades, led by scholars from the USA – ranking at the top regarding the total number of papers (23,965 papers; 30.8%) and total number of citations (859,793 citations) – and multiple Western countries where the obesity epidemic is prevalent. Conclusions: The findings highlight the need for improving international and local research capacities and collaboration to accelerate knowledge production and translation into contextualized and effective childhood obesity prevention.

Community health workers (in Vietnam referred to as village health workers) have the potential to play a key role in expanding access to evidence-based tobacco use treatment. We conducted a cluster randomized controlled trial in community health centers in Vietnam that compared the effect of provider advice and cessation assistance (i.e. brief counseling and patient education materials) (BC) vs. BC + three sessions of in-person counseling delivered by a village health worker (BC+R) on providers’ and village health workers’ adherence to tobacco use treatment guidelines. All village health workers and health care providers received training. This paper presents data on the effect of the intervention on village health workers’ adherence to tobacco use treatment guidelines, including asking about tobacco use, advising smokers to quit, offering assistance and their attitude, norms, and self-efficacy related to tobacco use treatment. We examined changes in adherence to tobacco use treatment guidelines before and 12 months after the intervention among 89 village health workers working in the 13 community health centers enrolled in the BC+R study condition. Village health workers’ adherence to tobacco use treatment guidelines increased significantly. Village health workers were more likely to ask about tobacco use (3.4% at baseline, 32.6% at 12 months), offer advice to quit (4.5% to 48.3%) and offer assistance (1.1% to 38.2%). Perceived barriers to treating tobacco use decreased significantly. Self-efficacy and attitudes towards treating tobacco use improved significantly. Increased adherence to tobacco use treatment guidelines was associated with positive attitudes towards their role in delivering tobacco use treatment and increasing awareness of the community health center smoke-free policy. The findings suggest that, with training and support systems, village health workers can extend their role to include smoking cessation services. This workforce could represent a sustainable resource for supporting smokers who wish to quit.

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