Prevalence of Tea, Coffee and Nescafe Consumption among High School Students

Tea is a beverage that is prepared by pouring boiling and hot water over its leaves. After water, tea is the most consumed beverage in the world. Probably for thefirst time in China, tea was used as a medicinal drink. Each year three billion kilograms of tea are produced worldwide. Black tea and green tea both come from the same plant. 

The difference is that the green tea leaves are steamed, and then dried. But black tea leaves are dried, fermented, and sometimes chemical materials and colors are added. The statistical analysis revealed that about80% of the Japanese drink green tea and more than half of them do so three ormore cups daily. The researchers also found that the benefits of green tea are greater in women. It increases the longevity told by Ulrike et al. In addition to tea, coffee is a common drink in the world. It seems that for the first time coffee has been used in Ethiopia. 

Caffeine is a natural alkaloid compound, found in the coffee beans and tea leaves and is the most common nervous system stimulant and approximately 80% of its consumption is in the form of coffee said by Lucas. In North America and Europe, the primary source of caffeine is from coffee and tea. According to statistics, 90% of the adult population in America consumes caffeine.