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Food safety concerns people's lives and property safety, the repeated food scandals of Chinese food safety brings a great shock at home and abroad. Chinese government has put forward many policies and schemes to solve the repeated food problems in China in recent years. There are several important measures in the process of dealing with the food safety problem. Among them, food recall is the most important and linking one that should be taken when the unsafe food has already flowed into the market. The establishment of Chinese food recall system has a great significance and shows a good start and a positive attitude of China in its long fight of food safety. However, in China, the food recall system is still in the bud and dose not get enough attention, many flaws and imperfection of Chinese food recall system has been revealed in its practical implementation. This paper attempts to find the flaws existing in Chinese food recall system and analyzes the complexity and diversity of Chinese present condition from the perspective of the theory of regulation. It's concluded that when the food safety supervisory authorities formulate the detailed plans or regulations of food recall system, they should explore a new path of food recall system and consider more the current condition and the specialty of the country rather than just put other countries' experience rigidly.

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Background: Under the global aging trend, health issues of the elderly have received more and more attention. Among them, older adults’ obesity is one of the common health problems of the elderly. There are few studies on the association between social capital and obesity in the elderly. We examined whether social capital was associated with obesity in the elderly.Methods: The data from the Chinese Longitudinal Healthy Longevity Survey (CLHLS) —wave 8 (2017–2018) was used in this study. Totally, 9551 respondents were included in the final analysis. Generalized trust, informal social interaction and participation of organized social activities were used as measures of social capital. Body mass index (BMI) were used as outcomes. Logistic regression analyses were used to assess associations between the social capital and health outcomes, adjusting for confounders.Results: We found that the elderly who did not trust people around them had greater odds of being obese compared to those who trust people around them [Adjusted Odds Ratio (AOR) 1.117, 95% CI 1.006 to 1.229]. The elderly interacting with friends (AOR 1.240, 95% CI 1.006 to 1.229) and participating in organized social activities (AOR 1.182, 95% CI 1.062 to 1.301) registered considerably higher BMI.Conclusions: These results confirm the importance of social capital in older adults’ obesity prevention in China, all dimensions of social capital are associated with obesity in the elderly. Furthermore, the positive and negative effects of social capital on obesity in the elderly should be more considered and examined.