美國農業(yè)部：肉桂對糖尿病人有益

食品伙伴網導讀：根據來自美國農業(yè)部的科學家的研究，肉桂等香辛料可用于對II型糖尿病的治療。他們對肉桂及其他香辛料進行提純精煉并對其評估，以探索它們對胰島素水平及其相關功能的益處。試驗在俄亥俄州進行，志愿者被隨機分為兩組，一組攝入水溶性的肉桂提取物對照組則服用安慰劑，實驗進行了12周。實驗結果表明，服用肉桂提取物的志愿者與對照組相比，空腹血糖顯著降低，肌肉量則略有增加，并且身體脂肪及血壓都略有下降。

原文報道：
By Mike Stones, 23-Jul-2010

Spices such as cinnamon could be used in the battle against type 2 diabetes, according to United States Agricultural Department (USDA) scientists.

Nutrition researchers from USDA’s Agricultural Research Service (ARS) are purifying, characterizing and evaluating the components of cinnamon and other spices to explore their beneficial effects on insulin levels and related functions.

Research by chemist Richard Anderson, at the Beltsville Human Nutrition Research Center (BHNRC), Maryland and colleagues suggests certain spices may be beneficial to some people with diabetes.

Blood glucose levels

Their study, based on a water-soluble extract of cinnamon, suggested that the spice could have a beneficial effect on insulin or blood glucose levels. “Insulin is a key hormone that ‘opens a door’ within cells and then escorts glucose into those cells, thus providing fuel to them,” according to the USDA website explaining the research. “Without a sufficient insulin supply, or ability to use available insulin, glucose builds up in the blood instead of going into cells where it can be metabolized and used for fuel. Over time, damage occurs to the eyes, kidneys, heart, and nerves.”

The cinnamon extract study, conducted in Ohio, focused on 22 volunteers with metabolic syndrome, which increases the chances of developing diabetes. Volunteers were randomly assigned to supplement their diets with either water-soluble cinnamon extracts or a placebo for 12 weeks.

Volunteers who took the cinnamon extract group showed significant decreases in fasting blood glucose and small increases in lean muscle mass compared with the placebo group. “Improvement in lean muscle mass is considered a marker of improved body composition,” according to the researchers.

Pre and post study analysis of the extract group also revealed small but statistically significant decreases in body fat and blood pressure. But other characteristics of metabolic syndrome, such as abnormal blood LDL or HDL cholesterol levels or triglycerides, were unaffected by the cinnamon extract.

Meanwhile, new biomarkers could help physicians and other health care professionals monitor the success of experimental nutrition-based strategies designed to help prevent type 2 diabetes.