2004 Fiscal Year Final Research Report Summary
A Study of cholesterol lowering effect by green tea intake in a community
| Project/Area Number |
14570328
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Public health/Health science
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| Research Institution | Hamamatsu University School of Medicine |
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Principal Investigator |
AOKI Nobuo Hamamatsu University, Hygiene, Professor, 医学部, 教授 (10109762)
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| Co-Investigator(Kenkyū-buntansha) |
NAKAMURA Mieko National Institute for Longevity Sciences, Epidemiology, Head, 研究所・疫学研究部, 室長 (30236012)
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| Project Period (FY) |
2002 – 2004
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| Keywords | hypercholesterolemia / green tea / epidemiological study / cross-sectional study / randomized-controlled study |
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| Research Abstract |
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.
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