Tea and tea drinking: China's outstanding contributions to the mankind

• Published in: Chinese medicine 2022-02, Vol.17 (1), p.27-27, Article 27
• Main Authors: Pan, Si-Yuan, Nie, Qu, Tai, Hai-Chuan, Song, Xue-Lan, Tong, Yu-Fan, Zhang, Long-Jian-Feng, Wu, Xue-Wei, Lin, Zhao-Heng, Zhang, Yong-Yu, Ye, Du-Yun, Zhang, Yi, Wang, Xiao-Yan, Zhu, Pei-Li, Chu, Zhu-Sheng, Yu, Zhi-Ling, Liang, Chun
• Format: Article
• Language: English
• Subjects: Alcoholic beverages; Analysis; Communicable diseases; COVID-19; Developing countries; Green tea; Harmonious society; Homeopathy; Human health; Materia medica and therapeutics; Medicine, Chinese; Polyphenols; Review; Tea; Tea beverage; Tea culture; Therapeutics
• ISSN: 1749-8546; 1749-8546
• DOI: 10.1186/s13020-022-00571-1

Tea trees originated in southwest China 60 million or 70 million years ago. Written records show that Chinese ancestors had begun drinking tea over 3000 years ago. Nowadays, with the aging of populations worldwide and more people suffering from non-communicable diseases or poor health, tea beverages have become an inexpensive and fine complementary and alternative medicine (CAM) therapy. At present, there are 3 billion people who like to drink tea in the world, but few of them actually understand tea, especially on its development process and the spiritual and cultural connotations. We searched PubMed, Google Scholar, Web of Science, CNKI, and other relevant platforms with the key word "tea", and reviewed and analyzed tea-related literatures and pictures in the past 40 years about tea's history, culture, customs, experimental studies, and markets. China is the hometown of tea, tea trees, tea drinking, and tea culture. China has the oldest wild and planted tea trees in the world, fossil of a tea leaf from 35,400,000 years ago, and abundant tea-related literatures and art works. Moreover, tea may be the first Chinese herbal medicine (CHM) used by Chinese people in ancient times. Tea drinking has many benefits to our physical health via its antioxidant, anti-inflammatory, immuno-regulatory, anticancer, cardiovascular-protective, anti-diabetic, and anti-obesity activities. At the moment, COVID-19 is wreaking havoc across the globe and causing severe damages to people's health and lives. Tea has anti-COVID-19 functions via the enhancement of the innate immune response and inhibition of viral growth. Besides, drinking tea can allow people to acquire a peaceful, relaxed, refreshed and cheerful enjoyment, and even longevity. According to the meridian theory of traditional Chinese medicine, different kinds of tea can activate different meridian systems in the human body. At present, black tea (fermented tea) and green tea (non-fermented tea) are the most popular in the world. Black tea accounts for over 90% of all teas sold in western countries. The world's top-grade black teas include Qi Men black in China, Darjeeling and Assam black tea in India, and Uva black tea in Sri Lanka. However, all top ten famous green teas in the world are produced in China, and Xi Hu Long Jing tea is the most famous among all green teas. More than 700 different kinds of components and 27 mineral elements can be found in tea. Tea polyphenols and theaflavin/thearubigins are considered to