At home Midterm - - Research Paper Example

But plasma level was significantly lowered only in the group treated with 4 cups of green tea per day and the mean drop of plasma cholesterol was 17.2%. Findings of this study confirm the therapeutic effect of green tea on lowering cholesterol. Health benefits of green tea have been extensively studied in animal experiments and in some human longitudinal and experimental trials specially using healthy individuals. These health benefits believed to be occurred due to high levels of polypenoles in green tea (Kuriyama et al, 2006).

Scientists suggest green tea can be a one reason for low incidents of cardio vascular disease and cancer among Japanese and Chinese. Kuriyama et al (2006) carried out an 11-year follow-up study to identify effect of green tea on cardiovascular disease, cancer, and all causes of death in Japan. This study recruited 40530 Japanese adults of age 40- 79 years. Their green tea consumption and cause of death were recorded. During the follow-up 4209 participants died and 892 deaths caused by CVD while 1134 deaths caused by cancer.

Statistical analysis showed death from CVD was significantly lower among the participants who consumed 3 or more cups of green tea daily than who consumed lower amounts after adjusting for age and sex. However no protective effect was found against the cancer. Another double blind experimental trial was carried out by Nagao et al in 2005. In this study experimental group was given 690 mg/d containing green tea extract verses 22 mg/d catchechins containing oolong tea for the control group for 12 weeks after two-week specific diet.

Their body weights, BMI, waist circumference, body fat mass, subcutaneous fat area and malondialdehyde-modified LDL were measured at the beginning and the end of the experiment. The group treated with green tea extract showed a significant reduction in body fat and malondialdehyde-modified LDL than that of the oolong tea group. A placebo controlled