Barley

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

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

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 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

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

In an experiment at the University of Alberta, barley kernels were sprouted from 2 to 5 days, then oven-dried and milled. Researchers found decreases in dry matter, gross energy (calories) and triglycerides, and increases in fiber and diglyceride content. After the sprouted barley was fed to rats, scientists said that “digestibility data showed an enhancement of digestibility of nutrients in barley… implying that sprouting improved nutritional qualify of barley.”
Plant Foods for Human Nutrition, September 1989; 39(3):267-78.