USANA receives certification through NSF's Certified for Sport Program

SALT LAKE CITY--(BUSINESS WIRE)--March 31, 2008--USANA Health Sciences, Inc. (NASDAQ: USNA) recently received certification of six of its products through NSF International's Certified for Sport(TM) program. NSF's independent certification helps athletes make educated decisions about the safety of the dietary supplements they choose to take.

USANA's Essentials(TM) (Mega Antioxidant and Chelated Mineral), Proflavonal(R) 90, Procosa(R) II, Active Calcium(TM) and Body Rox(TM) supplements are now approved to carry NSF's trusted Certified for Sport mark. USANA also received Good Manufacturing Practices registration and dietary supplement certification in 2007 through NSF. These are just some of the third-party findings that help consumers and athletes know USANA products are Nutritionals You Can Trust.

"The Certified for Sport program validates USANA's guarantee that our nutritional products are complete, balanced, safe and effective," said Dr. Tim Wood, USANA Executive Vice President of Research and Development. "This latest certification, as with all of our third-party testing, is based on regular product formulas--the same products that USANA customers take every day. Receiving this certification is just another step toward fulfilling our goal of providing supplements that everyday consumers and world-class athletes can trust."

The NSF Certified for Sport program was developed to meet the growing demand of athletes, coaches and all others concerned about banned substances. The NSF Certified for Sport(TM) Mark helps consumers know that products have met NSF's stringent independent certification guidelines. Products are tested and facilities are inspected for a wide range of substances prohibited by the World Anti-Doping Agency, the NFL/NFLPA and MLB/MLBPA. The list includes stimulants, narcotics, steroids, diuretics, beta-2 agonists, beta blockers, masking agents and other banned substances.

High-quality formulas, a rigorous quality assurance program and third-party certifications have helped USANA earn the trust of many world-class athletes and athletic organizations, including United States Speedskating, Speed Skating Canada, USA Luge and the Sony Ericsson WTA Tour. "It is imperative for our athletes to know precisely what they're putting into their bodies," said Stacey Allaster, President of the Sony Ericsson WTA Tour. "With USANA's guaranteed assurance of the quality of their products, our athletes can trust that they will be able to attain optimal health and fitness without the fear of violating the strict WADA code they all adhere to."

USANA has taken its assurances to athletes one step further through its unique Athlete Guarantee Program. Select athletes who participate in the program are guaranteed compensation up to $1 million if they should test positive for a substance banned by WADA as a result of taking USANA(R) nutritional products.

About NSF

NSF International, an independent, not-for-profit organization, helps protect you by certifying products and writing standards for food, water, air and consumer goods (www.nsf.org). Founded in 1944, NSF is committed to protecting public health and safety worldwide. NSF is a World Health Organization Collaborating Centre for Food and Water Safety and Indoor Environment. Additional services include safety audits for the food and water industries, management systems registrations delivered through NSF International Strategic Registrations, Ltd., organic certification provided by Quality Assurance International and education through the NSF Center for Public Health Education.

About USANA

USANA Health Sciences develops and manufactures high-quality nutritionals, personal care and weight management products that are sold directly Preferred Customers and Associates throughout the United States, Canada, Australia, New Zealand, Hong Kong, Japan, Taiwan, South Korea, Singapore, Malaysia, Mexico, the Netherlands and the United Kingdom.

CONTACT: USANA Health Sciences, Inc., Salt Lake City
Dan Macuga, 801-954-7280
Dan.Macuga@us.usana.com

SOURCE: USANA Health Sciences, Inc.

USANA Goes Green

USANA Health Sciences associates and employees frequently use the phrase Health & Freedom to describe what our company offers. I’ve always believed in these words and what they represent. So when my conservationist sister came to me two years ago with a challenge to expand on this belief, I took notice. “How can you speak of health and freedom,” she asked, “without making the environment part of your message?” It was hard to argue with her logic.

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Nourishing & Nurturing the World’s Forgotten Children

USANA Health Sciences Inc. and its founder Dr. Myron Wentz are not only interested in making superior nutritional supplements and personal products, but are also committed to alleviating pain and suffering throughout the world through better nutrition.

Executives at USANA measure the company’s success not just in terms of growth, but also in the impact the company and its associates have on the health of children and families in developing countries. This desire to engage in charitable issues dates back to the early days of the company.

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USANA demonstrates that symptoms of metabolic syndrome can be improved

New Study Involving a Low-Glycemic Diet and Exercise Offers Promising Results

SALT LAKE CITY--(BUSINESS WIRE)--March 10, 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.

USANA's original study, conducted with 25 subjects, found that the lifestyle modification program had dramatic effects on the health of participants. The University of Colorado study used a larger group (n=60) and found similar results. Those results will be fully published later this year, however initial results from the study are promising.

Subjects in the UCD study lost an average of 12 pounds over the 12-week program.
Even more dramatic, however, were the significant improvements in measures of glycemic control, cardiovascular health, inflammation and antioxidant status.

On average, study participants who completed the study (n=53) achieved the following transformations of measures of glycemic control:
- Fasting insulin was reduced by 32 percent
- Insulin levels during an oral glucose tolerance test at 120 min decreased by 44 percent
- Insulin resistance as measured by the HOMA index decreased by 32 percent

There also were notable changes in the subjects' measures of cardiovascular health:
- Systolic blood pressure declined 6 percent
- Diastolic blood pressure dropped 8 percent
- Total cholesterol dropped 5 percent
- Fasting triglyceride levels dropped 16 percent

Markers of inflammation and antioxidant status were also considerably improved:
- Plasma Antioxidant Reserve (PAR) increased 20 percent
- Urinary Isoprostanes, a marker of lipid peroxidation due to oxidative stress, decreased 29 percent
- C-Reactive Protein (CRP), a marker of inflammation, dropped 27 percent
- Vitamin E alpha levels increased by 30 percent

All of these changes are consistent with improvements to markers of Metabolic Syndrome and with significant improvements in cardiovascular and metabolic health.

Holly Wyatt, a physician and faculty member of the University of Colorado's Department of Medicine, Division of Endocrinology, Metabolism and Diabetes, oversaw the university study.

"This is a very promising program that produced some very positive changes in
the cardiovascular risk factors associated with the metabolic syndrome," Dr.
Wyatt said. "The shifts in dietary habits to calorically restricted low-glycemic
meals and the modest increases in physical activity were not only effective but
also are realistic behavioral changes many people can make."

About USANA
USANA Health Sciences develops and manufactures high-quality nutritionals, personal care, and weight management products that are sold directly to Preferred Customers and Associates throughout the United States, Canada, Australia, New Zealand, Hong Kong, Japan, Taiwan, South Korea, Singapore, Malaysia, Mexico, the Netherlands and the United Kingdom.
CONTACT:USANA Health Sciences, Inc., Salt Lake CityDan Macuga, 801-954-7280Dan.Macuga@us.usana.comSOURCE: USANA Health Sciences, Inc.

USANA Health Sciences Voted 'Distributor Choice' Best Company in Network Marketing on MLM Insider's List for 10th Straight Year

SALT LAKE CITY--(BUSINESS WIRE)--March 6, 2008--Distributors recently chose USANA Health Sciences (NASDAQ: USNA) as the best network marketing company for 2007 in an annual report released by MLM Insider. This marks the 10th year that USANA has ranked first in this category.

Each year, thousands of distributors make their pick for the best company in network marketing on the MLM Insider Website. USANA's continued place at the top of this noteworthy list demonstrates the loyalty and enthusiasm of its Associates and customers.

"USANA is honored to receive this recognition for the 10th straight year," said USANA Executive Vice President of Customer Relations Mark Wilson. "We are proud of our Associates and all they do, and we are grateful for their continued commitment to our company."

USANA Associate Pete Zdanis from Chester Springs, PA is one of many distributors who took the time to vote for USANA this year, "USANA's unprecedented achievement should come as no surprise, given that USANA's products are unequalled in the marketplace, the USANA Cellular Compensation Plan is among the fairest and most lucrative in the business, and USANA's management team has a proven track record of providing an outstanding business experience for tens of thousands of USANA Associates in 13 countries around the world," he explained.

USANA was also listed as one of the 10 best companies in network marketing on the MLM Insider's "Editor's Selection" list. This is the fourteenth consecutive year that USANA was included on the editor's list.

MLM Insider is a respected online information source for the multilevel marketing industry, providing links to education, training, and support information that are geared to both network marketing prospects and established distributors.

About USANA

USANA Health Sciences develops and manufactures high-quality nutritionals, personal care, and weight management products that are sold directly Preferred Customers and Associates throughout the United States, Canada, Australia, New Zealand, Hong Kong, Japan, Taiwan, South Korea, Singapore, Malaysia, Mexico, the Netherlands and the United Kingdom.

CONTACT:
USANA Health Sciences
Dan Macuga, 801-954-7280
Dan.Macuga@us.usana.com

SOURCE: USANA Health Sciences