Due to the fast pace of modern life, sedentary lifestyle and caloric-dense, high-fat diets have caused the obesity epidemic. Obesity epidemic has not only caused serious damage to the health of consumers, but also there exists strong externalities. Therefore, the government regulation needed to reverse the problem of obesity has become the must-have measures. However, the complexity and universality of the growing problem of obesity cause the gov-ernment regulationfor the obesity epidemic fall into the dilemma of interfering the consumers' freedom of choice and improving consumer welfare. By sorting out the epidemic of obesity, this paper takes into account the long-term health risks caused by the obesity epidemic, in order to discuss the feasibility of implementing government fat tax reg-ulation, and analyze the expected effects that fat tax policy may make on food market the effect.

Objective:As the main component of human capital, health capital's dynamic path has been generally received attention. Methods: According to Grossman’s theory of health capital, the health investment return is defined as the monetary benefits and psychological benefits and the optimum control theory is used to study the optimal path of health investment. Results:The optimum path of health investment has sole saddle point equilibrium with both stability and uniqueness. Conclusion: The maximum utility of consumers depends on the their subjective judgment of future life. As a rational consumer, it needs to consider that health risk rises with age gradually, health investment should be increased to maximize lifetime utility.

Objective To examine the content of the 69 iPhone applications(Apps) for smoking cessation that were distributed through the online iTunes store and explore Apps′level of adherence to the U .S .Public Health Service′s 2008 Clinical Practice Guideline for Treating Tobacco Use and Dependence (called guidelines) for the purpose of developing high quality Apps ,as of De-cember 29 ,2012 .Methods All Apps was categorized into 5 types based on National Tobacco Cessation Collaborative .In order to get the Apps′level of adherence to guidelines ,the content of every application was compared with guidelines respectively .Results Apps identified for smoking cessation were found to have low levels of adherence to key guidelines .Conclusion It is necessary that current and future Apps should be developed around evidence-based practices and guidelines to get reliable Apps for smoking cessa-tion .

Traditional Chinese medicine has been paid more and more attention in the development of modern healthcare,and its clinical diagnosis and treatment have broad prospects and enormous potential.However,the current traditional Chinese medicine diagnosis and treatment model have serious shortcomings in service capacity and,diagnosis,and treatment effect.The rapid development of big data and artificial intelli-gence technology provides an opportunity for the iterative upgrade of traditional Chinese medicine diagnosis and treatment models.This article reviewed the current situation of artificial intelligence empowering tradi-tional Chinese medicine clinical diagnosis and treatment,clarified the problems and challenges faced by artifi-cial intelligence technology in data integration,data quality,and data analysis in traditional Chinese medicine clinical diagnosis and treatment,and proposed to empower from the aspects of disciplinary integration,data quality optimization,data privacy protection,and promotion and application,so as to provide reference for im-proving the effectiveness of traditional Chinese medicine clinical diagnosis and treatment.

Based on formative evaluation, we constructed the evaluation system of Medical Infor-mation Analysis according to the literatures and theories of learning evaluation and teaching practice. In the present evaluation system, teachers and students evaluate each other. It focuses on the evaluation and feed-back of student learning. The frame of the system includes three primary indicators — learning attitude, interactive participation and behavioral results , and six corresponding secondary indicators for student learning evaluation. It is significant to introduce formative evaluation into course evaluation and to combine process evaluation with summative evaluation in evaluating those courses with many contents and limited time .It could improve teaching quality, promote student learning, and effectively achieve the curriculum objectives at last. The present evaluation system could be reference for other related curriculum evaluation.