飽餐後喝咖啡 血糖竄升

[MK]

http://www.merit-times.com.tw/NewsPage.aspx?Unid=222407
2011/4/5　


【本報綜合外電報導】在享用過一頓富含脂肪的大餐後，許多人喜歡喝一杯咖啡，解解油膩。但加拿大的一項醫學研究發現，這一習慣可能會讓血糖加倍升高，影響健康。

在一般的「脂肪雞尾酒」方法中，研究者首先設計一種類脂物飲品，飲用它的效果與攝入脂肪相同。然後，研究對象喝下一定量的類脂物飲品，模擬吃一頓大餐的脂肪攝入狀況。飲後六小時，每個研究對象再喝下一杯糖水，接著檢查這些研究對象的血糖指數。

研究人員挑選了一組健康的男性研究對象。研究結果證明，吃頓大餐後再喝糖水，研究對象的平均血糖會比未吃大餐僅喝糖水的健康人高出百分之三十二。

在進一步的研究中，研究人員在餐後五小時讓研究對象每人喝兩杯咖啡，一小時後，再喝一杯糖水。血糖測量結果發現，研究對象的平均血糖水準比未吃大餐僅喝糖水的健康人高出百分之六十五。這意味著，咖啡因加劇了高脂肪飲食對健康的損害。

[TC]

看不太懂....

[Calcium]

看不懂

[newshine]

有加糖的咖啡
還是黑咖啡呢

[咖大]

如果咖啡因會讓血糖飆高
那麼愛喝茶的華人機英國人
豈不是人人糖尿病？

[pippin]

http://jn.nutrition.org/content/141/4/574.abstract
An Oral Lipid Challenge and Acute Intake of Caffeinated Coffee Additively Decrease Glucose Tolerance in Healthy Men
Abstract
Lipid-induced insulin resistance has been investigated primarily with i.v. infusions, and caffeine-induced insulin resistance, with alkaloid caffeine. The effects of orally consumed lipids and coffee have not been established and to our knowledge have never been simultaneously investigated. The goals of this study were to determine whether an oral lipid challenge and caffeinated coffee would disrupt glucose homeostasis and to characterize their respective incretin responses. It was hypothesized that oral ingestion of saturated lipids would impair glucose tolerance and that caffeinated coffee would further hinder glucose management. Ten young, healthy males participated in 5 trials in a randomized, cross-over design. At time 0 h, they underwent an oral fat tolerance test (OFTT: 1 g lipid/kg body weight) or consumed water, followed 5 h later by caffeinated (5 mg/kg) coffee, decaffeinated coffee, or water. At 6 h, volunteers underwent an oral glucose tolerance test (OGTT). Consumption of the OFTT increased glucose concentrations (P < 0.05) after a subsequent OGTT. At 7 h, caffeinated coffee produced the highest glucose concentrations (P < 0.05). Glucagon-like peptide-1 active (GLP-1a) and glucose-dependent insulinotropic polypeptide (GIP) were both increased for up to 6 h in all OFTT trials (P < 0.05). Compared to all other treatments, caffeinated and decaffeinated coffee produced higher GLP-1a response at 6.25 h (P < 0.05), whereas only caffeinated coffee increased GIP secretion (P < 0.05). These results show that oral consumption of lipids and caffeinated coffee can independently and additively decrease glucose tolerance. Incretin hormones could explain at least in part this impaired glucose homeostasis.

[pippin]

中時電子報
http://news.chinatimes.com/realtime/110 ... 00724.html
饕餮後喝咖啡 血糖竄升
2011-04-04 【中央社】
　在享用過一頓富含脂肪的大餐後，歐美許多人願意喝一杯咖啡，解解油膩。但加拿大的一項醫學研究發現，這一習慣可能會讓血糖加倍升高，影響健康。

　新華社報導，加拿大圭爾夫(Guelph)大學的研究人員利用「脂肪雞尾酒」方法發現了咖啡因對血糖的這一影響。

　在一般的「脂肪雞尾酒」方法中，研究者首先設計一種類脂物飲品，飲用它的效果與攝入脂肪相同。然後，研究對象喝下一定量的類脂物飲品，模擬吃一頓大餐的脂肪攝入狀況。飲後6小時，每個研究對象再喝下一杯糖水，接著檢查這些研究對象的血糖指數。

　據刊登圭爾夫大學成果的最新一期美國「營養學雜誌」報告，加拿大研究人員挑選了一組健康的男性研究對象。研究結果表明，吃頓大餐後再喝糖水，研究對象的平均血糖會比未吃大餐僅喝糖水的健康人高出32% 。

　在進一步的研究中，研究人員在餐後5小時讓研究對象每人喝兩杯咖啡，1小時後，再喝一杯糖水。血糖測量結果發現，研究對象的平均血糖水準比未吃大餐僅喝糖水的健康人高出65%。這意味著，咖啡因加劇了高脂肪飲食對健康的損害。1000404

[newshine]

http://jn.nutrition.org/content/141/4/574.abstract
An Oral Lipid Challenge and Acute Intake of Caffeinated Coffee Additively Decrease Glucose Tolerance in Healthy Men
Abstract
...恕刪
These results show that oral consumption of lipids and caffeinated coffee can independently and additively decrease glucose tolerance. Incretin hormones could explain at least in part this impaired glucose homeostasis.

感謝大大的認真

看起來是已經排除掉喝到糖份的問題，結果也顯示高脂肪飲食會造成血糖上升之外
咖啡也是一個風險因素。
不過人數少了一點就是了


幸好偶只有早餐喝咖啡

[TC]

餐後五小時喝咖啡也算"飽餐後喝咖啡"?

[Calcium]

該文章受試者只有十位，sample數會不會太少?

支持我懶得戒掉咖啡的原因之一是以下這篇cohort study: prospective cohort study including 88,259 U.S. women

http://care.diabetesjournals.org/content/29/2/398.full