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Groene thee helpt bij afvallen.
Thee rijk aan catechines doet op de langere termijn het
lichaamsvet duidelijk verminderen en daardoor ook het cholesterol verlagen
volgens een Japans onderzoek.
Ingestion
of a tea rich in catechins leads to a reduction in body fat and
malondialdehyde-modified LDL in men1,2,3
Tomonori
Nagao, Yumiko Komine, Satoko Soga, Shinichi Meguro, Tadashi Hase, Yukitaka
Tanaka and Ichiro Tokimitsu
1
From Health Care Products Research Laboratories No.1, Kao Corporation, Tokyo
(TN, YK, SS, SM, TH, YT, and IT)
Background:
Catechins, the major component of green tea extract, have various
physiologic effects. There are few studies, however, on the effects
of catechins on body fat reduction in humans. It has been reported
that the body mass index (BMI) correlates with the amount of
malondialdehyde and thiobarbituric acid–reactive substances in the
blood.
Objective:
We investigated the effect of catechins on body fat reduction and the
relation between oxidized LDL and body fat variables.
Design:
After a 2-wk diet run-in period, healthy Japanese men were divided
into 2 groups with similar BMI and waist circumference distributions.
A 12-wk double-blind study was performed in which the subjects
ingested 1 bottle oolong tea/d containing 690 mg catechins (green tea
extract group; n = 17) or 1 bottle oolong tea/d containing 22
mg catechins (control group; n = 18).
Results:
Body weight, BMI, waist circumference, body fat mass, and
subcutaneous fat area were significantly lower in the green tea
extract group than in the control group. Changes in the concentrations
of malondialdehyde-modified LDL were positively associated with
changes in body fat mass and total fat area in the green tea extract
group.
Conclusion:
Daily consumption of tea containing 690 mg catechins for 12 wk
reduced body fat, which suggests that the ingestion of catechins
might be useful in the prevention and improvement of
lifestyle-related diseases, mainly obesity
American Journal of Clinical Nutrition, Vol. 81, No. 1, 175-188, January 2005