USANA
March 12, 2008

USANA Health Sciences, Inc. (NASDAQ: USNA) announced today that a large, third-party clinical study recently completed at the University of Colorado Denver (UCD) has confirmed that lifestyle change, involving diet, supplementation and exercise, can improve the metabolic syndrome.

The results of this study verified those from an earlier study conducted by USANA in 2005. Both clinical trials employed a lifestyle program that included exercise, USANA's nutritional supplements, and a low-glycemic diet including USANA's nutritional shakes and bars. Metabolic syndrome is a pre-diabetic state that involves multiple symptoms including central obesity, insulin resistance, elevated blood lipids, elevated blood glucose, and high blood pressure. Dr. Ray Strand, a family-practice physician, member of USANA's Scientific Advisory Council and distributor, developed the Internet-based lifestyle program.

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