Green Tea 綠茶與老人

Research綠茶與老人Green tea shows benefits for elderly with metabolic syndrome

By 21/09/2015

研究綠茶與老人綠茶顯示老年代謝綜合征的好處

由斯蒂芬 · 丹尼爾斯 2012 年 8 月 22 日

 

三杯綠茶每天可以説明老年人代謝綜合征患者減輕體重和減少她們的腰圍，來自巴西的一項新研究表明。

 

科學家從教廷天主教大學的裡奧格蘭德 do Sul (PUCRS) 報告，在為期 60 天，約 2 釐米的腰圍減少 1.2 公斤平均損失掛鉤綠茶消費。

 

營養學雜誌 》 上，健康與老化研究人員寫了綠茶的潛在好處可能涉及多酚飲料增加產熱中或通過抑制食欲，備用機制的能力。

 

綠茶

 

這項研究將添加到令人信服的科學支援潛在的體重管理潛力的綠茶身體。

 

科學對茶的多數有地看著綠茶，成效報告為減少風險的阿爾茨海默氏症和某些癌症，改善心血管病和口腔健康。

 

綠茶含有 30%至 40%的水可萃取茶多酚，而紅茶 (被氧化發酵的綠色茶) 中含有 3%至 10%之間。烏龍茶是半發酵茶，是介於綠茶和紅茶之間。四主中的多酚新鮮茶葉是兒茶素沒食子酸酯 (EGCG)、 兒茶素 (EGC)、 表兒茶素沒食子酸酯 (ECG) 和表兒茶素 (EC)。

 

這項新的研究涉及老年人代謝綜合征。大都會是指到群集的條件包括血壓高的壓力，提高的血糖水準，多餘的身體脂肪周圍腰或低高密度脂蛋白膽固醇 (好膽固醇) 和甘油三酯增加的血液 — — 所有的已知大大增加心臟病、 中風和糖尿病的風險。

 

研究細節

 

大都會四十五老年患者被隨機分配到兩個團體之一: 第一組需消耗三杯綠茶每天由 1.0 g 香袋，和另一組不奉命對他們的生活方式進行更改。

 

經過 60 天的干預，研究人員報告綠茶組到末尾 70.3 公斤研究開始時顯示"統計學減肥"從平均的 71.5 公斤。對照組觀察沒有重大變化。

 

此外，兩組顯示體重指數和腰圍周長顯著下跌，但跌幅更大綠茶組中，研究者說。

 

"考慮到個人與大都會在 '代謝混亂' 慢性狀態，將這些生化參數帶回正常的任務是非常複雜的因為它涉及的激素、 遺傳、 互動和炎性因數和變數年齡 (老化)，"他們寫道。

 

"但是，要確認的假設，即綠茶行為抑制食欲和增加飽腹感，進一步調查將必要。"

 

資料來源: 營養、 健康與老化雜誌

發佈線上列印，doi: 10.1007/s12603-012-0081-5

"老年人代謝綜合征組分綠茶 (茶樹) 消費效應"

作者: A.E.維艾拉勝雅律 C.H.A.是相配，I.戈麥斯 M.G.瓦戈特利布

 

Three cups of green tea per day may help elderly people with metabolic syndrome lose weight and trim their waistlines, suggests a new study from Brazil.

 

Scientists from the Pontifical Catholic University of Rio Grande do self (PUCRS) report that green tea consumption was linked to an average loss of 1.2 kg over a 60 day period and a reduction in waist circumference of about 2 cm.

 

The potential benefits of green tea may be related to the ability of the polyphenols in the beverage to increase thermogenesis or via an alternate mechanism of appetite suppression, wrote the researchers in The Journal of Nutrition, Health & Aging.

 

Green tea

 

The study adds to a compelling body of science supporting the potential weight management potential of green tea.

 

The majority of science on tea has looked at green tea, with benefits reported for reducing the risk of Alzheimer's and certain cancers, improving cardiovascular and oral health.

 

Green tea contains between 30 and 40 per cent of water-extractable polyphenols, while black tea (green tea that has been oxidized by fermentation) contains between 3 and 10 per cent. Oolong tea is semi-fermented tea and is somewhere between green and black tea. The four primary polyphenols found in fresh tealeaves are epigallocatechin gallate (EGCG), epigallocatechin (EGC), epicatechin gallate (ECG), and epicatechin (EC).

 

The new study involved elderly people with metabolic syndrome. MetS is refers to a cluster of conditions including high blood pressure, raised blood sugar level, excess body fat around the waist or low HDL (the good cholesterol) and increased blood triglycerides – all of which are known to significantly increase the risk for heart disease, stroke and diabetes.

 

Study details

 

Forty-five elderly people with MetS were randomly assigned to one of two groups: The first group was required to consume three cups of green tea per day made from 1.0 g sachets, and the other group was instructed not to make changes to their lifestyle.

 

After 60 days of intervention, the researchers report that the green tea group displayed “statistically significant weight loss” from an average of 71.5 kg at the start of the study to 70.3 kg at the end. No significant changes were observed in the control group.

 

In addition, both groups displayed significant decreases in BMI and waist circumference, but the decreases were greater in the green tea group, said the researchers.

 

“Considering that individuals with MetS are in a chronic state of ‘metabolic chaos,’ the task of bringing these biochemical parameters back to normal is very complex, because it involves the interaction of hormonal, genetic, and inflammatory factors and the variable age (aging),” they wrote.

 

“However, to confirm the hypothesis that green tea acts in the suppression of appetite and increase in satiety, further investigations would be necessary.”

 

Source: The Journal of Nutrition, Health & Aging

Published online ahead of print, doi: 10.1007/s12603-012-0081-5

“Effect of green tea (Camellia sinensis) consumption on the components of metabolic syndrome in elderly”

Authors: A.E. Vieira Senger, C. H. A. Schwanke, I. Gomes, M.G. Valle Gottlieb