A Study of cholesterol lowering effect by green tea intake in a community

社区摄入绿茶降低胆固醇效果的研究

• 批准号: 14570328
• 负责人: AOKI Nobuo
• 金额: $ 1.22万
• 依托单位: Hamamatsu University School of Medicine
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14570328/
• 关键词: hypercholesterolemia; green tea; epidemiological study; cross-sectional study; randomized-controlled study

Few epidemiological studies have shown the lowering effects of serum cholesterol by green tea drinking. Evidence on experimental studies of green tea intake to lower serum cholesterol level is insufficient. This study aims to evaluate the relationship between green tea intake and serum cholesterol levels by cross-sectional study, to clarify more people would intake more usual green tea by simple campaign, and to evaluate cholesterol lowering effect of green tea intake by a randomized controlled study.(Results) 1.Our cross-sectional study in a rural community shows that men and women with normal serum cholesterol level took more green tea than those with high serum cholesterol level.2.After the campaign to drink more green tea in daily life, about ten percent of men and women took more thick green tea, about thirty percent took more amount of green tea. These figures could be said to be relatively high to compare the intervention effects of the campaign not to smoke.3.Our randomized controlled study showed that mean of serum cholesterol decreased in the group of intake of green tea tablets and in the group of intake of placebo tablets. There was no significant difference between the mean of serum cholesterol.4.To see former epidemiological reports, the results on the lowering effects of green tea intake are not consistent and further epidemiological studies are needed.

很少有流行病学研究表明，喝绿茶可以降低血清胆固醇。绿茶摄入降低血清胆固醇水平的实验研究证据不足。本研究旨在通过横断面研究来评价绿茶摄入量与血清胆固醇水平的关系，通过简单的运动来阐明更多的人会更常喝绿茶，并通过随机对照研究来评价绿茶的降胆固醇效果。(结果)1.我们在农村社区的横断面研究显示，血清胆固醇水平正常的男性和女性比血清胆固醇水平高的男性和女性更多地喝绿茶。2.在日常生活中多喝绿茶后，约10%的男性和女性喝的绿茶更浓，约30%的人喝绿茶的量更多。这些数字可以说是比较不吸烟运动的干预效果的相对较高的数字。3.我们的随机对照研究显示，服用绿茶片组和服用安慰剂片组的血清胆固醇平均值降低。血清胆固醇均值差异无统计学意义。4.有关绿茶降脂作用的研究结果尚不一致，尚需进一步的流行病学研究。