如果你的身體,，出現(xiàn)了肥胖,、高血壓,、異常膽固醇指數(shù)的現(xiàn)象，那么很可能就是身體健康即將出現(xiàn)問題的征兆,，臨床上這一類的癥狀,，若再合并胰島素抗性 (insulin resistance) 的問題，多半會被科學(xué)家,，歸類于新陳代謝癥候群,。最近由哈佛大學(xué)公共衛(wèi)生學(xué)院(School of Public Health) 的科學(xué)家發(fā)表最新的一項研究結(jié)果顯示，就實際的比對發(fā)現(xiàn),，若在日常的飲食中,，攝取足量的大豆 (soy)，那么就可以有效的降低包括糖尿病心臟病的發(fā)生機會,。
現(xiàn)代社會中的新陳代謝癥候群有多嚴(yán)重呢 ?就國際相關(guān)衛(wèi)生單位的統(tǒng)計,，就工業(yè)化的國家來說，約有三成的人口,，有著嚴(yán)重程度不一的新陳代謝癥候群,，因此光就美國地區(qū)，就有五千萬至七千五百萬潛在的病人口，而醫(yī)療單位的數(shù)據(jù)還發(fā)現(xiàn)新陳代謝癥狀群的患病人口,，比起健康的人來說,，提高了二至四倍罹患心臟病的比例，而就麻煩的糖尿病來說,，發(fā)生的機率也高到九到三十倍,，其它像是腎臟病、肝病,、卵巢疾病或者睡眠障礙以及癡呆 (dementia)等,，患病的機會也會增加許多。
據(jù)了解這次的研究計劃,，募集了罹患新陳代謝癥候群的后更年期 (postmenopausal)婦女,，嘗試著利用大豆或是大豆仁 (soy nuts)，來治療新陳代謝癥候群的癥狀,，結(jié)果研究人員發(fā)現(xiàn),，服用大豆類食物為主要蛋白質(zhì)來源的族群，不但壞的膽固醇 (LDL)比例降低了,，還明顯的改善了胰島素抗性的問題,，科學(xué)家認(rèn)為這很可能是大豆內(nèi)富含不飽和脂肪酸 (polyunsaturated fat) 和豐富的異黃酮素(Isoflavones) 營養(yǎng)素所帶來的效果。
(資料來源 : biocompare)
英文原文：
Harvard Study: Soy Counteracts Metabolic Syndrome
3/28/2007
Source: United Soybean Board
Obesity. High blood pressure. Abnormal cholesterol levels. Most of us intuitively recognize these as warning signs for health problems. Combine these risk factors in individuals with insulin resistance, however, and the cluster becomes metabolic syndrome -- a precursor to heart disease and type-2 diabetes. Now, new research co-authored by the Harvard University School of Public Health shows that adding soy to the diet may improve many problems associated with the metabolic syndrome above and beyond that of a healthy diet without soy.
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The study evaluated both soy protein and soy nut consumption among postmenopausal women living with metabolic syndrome. Soy protein and soy nuts each exhibited a beneficial effect on components of the syndrome, but soy nuts had the strongest impact, perhaps because they provided soy protein as well as polyunsaturated ("good") fat and contained a higher amount of soybean isoflavones.
How much should we worry about metabolic syndrome? The condition afflicts up to 30 percent of the industrialized world's population, and will likely affect 50 to 75 million Americans by the year 2010. Alarmingly, this syndrome increases risk of heart disease by two to four times that of the normal population, and increases risk of type-2 diabetes by nine to 30 times. Research also suggests the metabolic syndrome may play havoc with the kidneys, liver, ovaries, ability to sleep and even dementia.
Published in the American Journal of Clinical Nutrition, the Harvard study, which was co-authored by researchers at Shaheed Beheshti University of Medical Sciences in Iran, used a randomized crossover design involving 42 Iranian postmenopausal women. All subjects consumed each of three different diets for eight week periods: a healthy diet that had previously been demonstrated to lower blood pressure, the same diet in which soy protein replaced the original protein source or the same diet in which soy nuts replaced the protein source.
The results showed that all three diets lowered LDL ("bad") cholesterol but the decreases were significantly greater in the diets containing soy. Even more impressive, the soy-containing diets markedly improved insulin resistance, a hallmark of the metabolic syndrome. In this case, soy nuts had a greater effect than soy protein.
Dr. Mark Messina, a nutritionist and noted soyfood expert, commented, "The results of this study confirm the well-recognized role of soyfoods in reducing cholesterol levels and provide new evidence that soyfoods can potentially help millions of individuals with the metabolic syndrome by improving insulin resistance."
About the United Soybean Board:
The United Soybean Board is a farmer-led organization comprised of 64 farmer-directors. USB oversees the investments of the soybean checkoff on behalf of all U.S. soybean farmers. For more soy and health information, please visit www.soyconnection.com.
CONTACT: Diana Steeble of United Soybean Board, +1-206-270-4637,[email protected]
Web site: http://www.soyconnection.com//
