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Barley Controls Blood Sugar Better
Dutch researchers used a crossover study with 10 healthy men to compare the eﬀects of cooked barley kernels and reﬁned wheat bread on blood sugar control. The men ate one or the other of these grains at dinner, then were given a high glycemic index breakfast (50g of glucose) the next morning for breakfast. When they had eaten the barley dinner, the men had 30% better insulin sensitivity the next morning after breakfast.
American Journal of Clinical Nutrition, January 2010; 91(1):90-7. Epub 2009 Nov 4.
Barley Lowers Glucose Levels
White rice, the staple food in Japan, is a high glycemic index food. Researchers at the University of Tokushima found that glucose levels were lower after meals when subjects switched from rice to barley.
Rinsho Byori. August 2009; 57(8):797-805
Barley Beta-Glucan Lowers Glycemic Index
Scientists at the Functional Food Centre at Oxfod Brookes University in England fed 8 healthy human subjects chapatis (unleavened Indian ﬂatbreads) made with either 0g, 2g, 4g, 6g or 8g of barley beta-glucan ﬁber. They found that all amounts of barley beta-glucan lowered the glycemic index of the breads, with 4g or more making a signiﬁcant diﬀerence.
Nutrition Research, July 2009; 29(7):4806
Insulin Response better with Barley Beta-Glucan
In a crossover study involving 17 obese women at increased risk for insulin resistance, USDA scientists studied the eﬀects of 5 diﬀerent breakfast cereal test meals on subjects’ insulin response. They found that consumption of 10g of barley beta-glucan signiﬁcantly reduced insulin response.
European Journal of Nutrition, April 2009; 48(3):170-5. Epub 2009 Feb 5.
Barley Beats Oats in Glucose Response Study
USDA researchers fed barley ﬂakes, barley ﬂour, rolled oats, oat ﬂour, and glucose to 10 overweight middle-aged women, then studied their bodies’ responses. They found that peak glucose and insulin levels after barley were signiﬁcantly lower than those after glucose or oats. Particle size did not appear to be a factor, as both ﬂour and ﬂakes had similar eﬀects.
Journal of the American College of Nutrition, June 2005; 24(3):182-8
Barley Reduces Blood Pressure
For ﬁve weeks, adults with mildly high cholesterol were fed diets supplemented with one of three whole grain choices: whole wheat/brown rice, barley, or whole wheat/brown rice/barley. All three whole grain combinations reduced blood pressure, leading USDA researchers to conclude that “in a healthful diet, increasing whole grain foods, whether high in soluble or insoluble ﬁber, can reduce blood pressure and may help to control weight.”
Journal of the American Dietetic Association, September 2006; 106(9):1445-9
Barley Lowers Serum Lipids
University of Connecticut researchers reviewed 8 studies evaluating the lipid-reducing eﬀects of barley. They found that eating barley signiﬁcantly lowered total cholesterol, LDL (“bad”) cholesterol, and triglycerides, but did not appear to signiﬁcantly alter HDL (“good”) cholesterol.
Annals of Family Medicine, March-April 2009; 7(2):157-63
Cholesterol and Visceral Fat Decrease with Barley
A randomized double-blind study in Japan followed 44 men with high cholesterol for twelve weeks, as the men ate either a standard white-rice diet or one with a mixture of rice and high-beta-glucan pearl barley. Barley intake signiﬁcantly reduced serum cholesterol and visceral fat, both accepted markers of cardiovascular risk.
Plant Foods and Human Nutrition, March 2008; 63(1):21-5. Epub 2007 Dec 12.
Barley Signiﬁcantly Improves Lipids
25 adults with mildly high cholesterol were fed whole grain foods containing 0g, 3g or 6g of barley beta-glucan per day for ﬁve weeks, with blood samples taken twice weekly. Total cholesterol and LDL (“bad”) cholesterol signiﬁcantly decreased with the addition of barley to the diet.
American Journal of Clinical Nutrition, November 2004; 80(5):1185-93
Barley Pasta Lowers Cholesterol
University of California researchers fed two test meals to 11 healthy men, both containing beta-glucan. One meal was a high-ﬁber (15.7g) barley pasta and the other was lower-ﬁber (5.0g) wheat pasta. The barley pasta blunted insulin response, and four hours after the meal, barley-eaters had signiﬁcantly lower cholesterol concentration than wheat-eaters.
American Journal of Clinical Nutrition, January 1999; 69(1):55-63
Barley’s Slow Digestion may help Weight Control
Barley varieties such as Prowashonupana that are especially high in beta-glucan ﬁber may digest more slowly than standard barley varieties. Researchers at USDA and the Texas Children’s Hospital compared the two and concluded that Prowashonupana may indeed be especially appropriate for obese and diabetic patients.
Journal of Nutrition, September 2002; 132(9):2593-6
Greater Satiety, Fewer Calories Eaten with Barley
In a pilot study not yet published, six healthy subjects ate a 420-calorie breakfast bar after an overnight fast, then at lunch were oﬀered an all-you-can-eat buﬀet. When subjects ate a Prowashonupana barley bar at breakfast they subsequently ate 100 calories less at lunch than when they ate a traditional granola bar for breakfast.