Objective: To explore the medicinal and health value of tea, to deepen our understanding of using tea as a form of therapy and its cultural connotation, and to provide an effective therapy within the field of natural healing. Methods: This paper aims to reveal the special value of tea therapy and its cultural connotation by looking back on the history of tea culture and basing the research on traditional Chinese medicine literature. This paper looks back upon the important books of traditional Chinese Medicine and tea theory to analyze the health effects of tea and the historical changes of the methods of using and drinking tea. At the same time we explore the medicinal effect of different varieties of tea and how they affect different groups of people. Through the analysis of the relevant social and cultural background, that is, the unique natural and human environment of China, including the influence of Confucianism, Buddhism and Taoism on how drinking tea improves health, we discuss the unique role of tea culture in improving health. Conclusion: Using tea therapy to improve health has had a long history in China, and its medicinal history can be traced back to the period of Shen Nong, which was thousands of years ago. The medical books and tea books of the past dynasties all recorded the medicinal effects of tea. Tea is the most common health drink. Tea has been integrated into Chinese Medicine throughout the ages, such as taking medical herbs with tea, or drinking Chinese medicine as tea drinks. Tea therapy can be used by different means, such as oral administration and external use. As for the methods of drinking tea, they have evolved from boiling tea to brewing tea. New tea making methods not only make its application more convenient, it also improves the medicinal value of tea. Now days, there are six main kinds of tea in China, and each of them have their different medicinal effects and the best way to drink them. Tea therapy is not only the substance of tea itself. It also includes the environment (nature and people) in which the tea is drunk and the tea’s cultural connotation. These make up the main components of tea therapy. The natural integration of the physical and cultural qualities of tea is the highest realm of tea therapy.

This research was planned and executed to evaluate how the composition of Yack-sun tea can affect the health conditions of people who are suffering from diet-related such as being overweight, are obese and have hyperlipidemia, by taking Yack-sun tea in a form of a nutritional supplement with our daily meals. We produced Kangjieum with Lycium chinense Mill., Polygonum multflorum Thunb, Cassia tora L., Crataegus pinnatifida Bge and Salvia miltiorrhiza Bge. Thus, we approach of oriental diet therapy area research of Kangjieum and analysis proximate composition, water soluble antioxidant content. The content(%, dry basis) of total carbohydrate was 60.23%, crude protein was 18.18%, crude ash was 11.36% and crude fat was 10.23% in Kangjieum. Total water soluble antioxidant content was 1.027 ㎍/㎖ of Kangjieum. We think that scientific and objective evaluation was done on the components of the Kangjieum prescription. This basic data could help guide the application of oriental medicinal resources into other foods and serve as a stepping-stone for use of Kangjieum in the burgeoning field of nutraceutical foods. Last, the scientific effects of oriental medicinal foods developed according to oriental medicinal theory. This theory is believed to be essential for government policy development concerning validation of medicinal effects and assessment, with the aim of fostering systematic development and providing guidance to food development in the interest of national health.