Yanjun Ren

Prof. Dr. Yanjun Ren

Leibniz Institute of Agricultural Development in Transition Economies (IAMO)
orcid

Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 July 2019 in Social Science & Medicine
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Journal Article
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Yanjun RenYanjun Ren
Yanjun Ren
HLHui Li
Hui Li
XWXiaobing Wang
Xiaobing Wang

12 March 2021 in Nutrients
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Journal Article
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Yanjun RenYanjun Ren
Yanjun Ren
Bente Castro-CamposBente Castro-Campos
Bente Castro-Campos
YPYanling Peng
Yanling Peng
TGThomas Glauben
Thomas Glauben
Although rapid urbanization is often considered as one of the most important drivers for changing dietary patterns, little attention has been paid to rural areas despite the profound transformation they have undergone. Using longitudinal data from the China Health and Nutrition Survey (CHNS) for the period from 2004 to 2011, this study seeks to better understand the relationship between the urbanization of rural areas and dietary transition, with the focus on nutrition intake and dietary quality. Our results suggest that with increasing urbanization, rural residents tend to have on average lower calorie intakes but higher dietary quality. Specifically, increasing urbanization consistently reduces carbohydrate consumption and reduces fat consumption after a turning point; protein consumption first decreases and then increases after the turning point with increasing urbanization. Urbanization shows a significant and positive effect on the Healthy Eating Index (HEI). In addition to sociodemographic changes, we find that changing consumer preferences and knowledge serve as important determinants in explaining the dietary transition in rural China from 2004 to 2011. In our study, urbanization appears to positively affect rural residents’ healthy food preferences and dietary knowledge. This study is a first attempt for better understanding the nutrition transition resulting from accelerating urbanization in rural China; several limitations and areas for future research have been highlighted.

1 December 2016 in China Economic Review
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Journal Article
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Bente Castro-CamposBente Castro-Campos
Bente Castro-Campos
Yanjun RenYanjun Ren
Yanjun Ren
MPMartin Petrick
Martin Petrick

30 July 2018 in China Agricultural Economic Review
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Journal Article
Closed access
Yanjun RenYanjun Ren
Yanjun Ren
YZYanjie Zhang
Yanjie Zhang
JLJens-Peter Loy
Jens-Peter Loy
TGThomas Glauben
Thomas Glauben
Purpose: Given the fact that the income disparity has become extremely severe in rural China, the purpose of this paper is to examine heterogeneity in food consumption among various income classes and to investigate the impact of changes in income distribution patterns on food demand in rural China.Design/methodology/approach: In this study, the authors partition the households into five income classes according to the distribution of household per capita net income. Using household data drawn from the China Health and Nutrition Survey in 2011, a two-stage demand model is applied to estimate a food demand system for each of the income classes. After obtaining the estimated income elasticities of eight studied food groups for each income class, the authors then examine the responsiveness of food demand to the changes in income distribution by means of four scenarios with varying income distribution.Findings: The empirical results indicate that substantial differences in food consumption exist across various income classes. Specifically, the lowest-income households are more sensitive to price and income changes for most studied food groups than the highest-income households are. In general, income responsiveness is higher for meats, aquatic products and dairy products. Based on estimated income elasticities, the projected food consumption under different income distribution patterns shows that changes in income distribution have significant influences on food consumption. In addition, the authors conclude that a more equal distribution of income would be associated with a higher demand for food in rural China.Originality/value: This paper employs a two-stage demand model to estimate food demand in rural China by income classes. The results imply substantial differences in food demand for various income classes. Therefore, income distribution should be taken into account instead of an average estimation for the population as a whole when investigating food demand in rural China. Given the significant changes in income distribution in rural China, this study provides several important policy implications to alleviate income inequality and poverty, as well as to improve nutrition for lower-income classes.

23 November 2023 in Journal of Integrative Agriculture
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Journal Article
Open access
SLShaoting Li
Shaoting Li
XCxuan chen
xuan chen
Yanjun RenYanjun Ren
Yanjun Ren
TGThomas Glauben
Thomas Glauben

2 December 2013 in Journal of Epidemiology and Community Health
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Journal Article
Open access
JLJun Lv
Jun Lv
QLQing-Min Liu
Qing-Min Liu
Yanjun RenYanjun Ren
Yanjun Ren
PHPing-Ping He
Ping-Ping He
SWShengfeng Wang
Shengfeng Wang
OCon behalf of the Community Interventions for Health (CIH) collaboration
on behalf of the Community Interventions for Health (CIH) collaboration
Background: To assess the short-term impact of a comprehensive, community-based multilevel intervention on knowledge, beliefs and practices with respect to smoking, physical activity and diet in Hangzhou, China. Methods: A non-randomised, controlled, before-after quasi-experimental trial was conducted in two intervention areas and one comparison area. The intervention built on a socioecological framework and took place across four settings: neighbourhoods, schools, workplaces and community health centres. Two independent cross-sectional surveys of adults aged 18–64 years at baseline and a subsequent follow-up were conducted in 2008/2009 and 2011 in the intervention and comparison areas. A 2-year intervention programme was begun in mid-2009 and continued until mid-2011. Results: A total of 2016 adults at baseline and 2016 adults at follow-up completed the survey. Over the 2-year intervention period, the intervention areas showed a statistically significant decline (25.2% vs 18.7%, p<0.001) in the prevalence of smoking compared with the comparison area (18.0% vs 16.4%, p=0.343). The proportion of individuals who had noticed anyone smoking in any of nine locations in the previous 30 days demonstrated a statistically significant decline in the intervention (78.9% vs 66.5%, p<0.001) and comparison (76.3% vs 66.5%, p<0.001) areas. The fruit and vegetable consumption score increased in a statistically significant manner in the intervention (24.84 vs 25.97, p=0.036) and comparison (24.25 vs 26.67, p<0.001) areas. The metabolic equivalent of physical activity increased from 1204 to 1386 (p=0.023) in the intervention areas compared with 918 to 924 in the comparison area (p=0.201). Conclusions: After a 2-year intervention, beneficial changes were noted in the intervention areas with respect to smoking and physical activity but not diet. A community-based multilevel intervention programme is feasible in urban China.