Usana Health Sciences Review - Why Join Dr. Myron Wentz This commentary is a review of USANA Health Sciences, which is a network marketing company in Salt Lake City, Utah. USANA produces various products for weight control, personal care, and nutritional supplementation at its facility in Salt Lake City, Utah. USANA has associates in fourteen markets: Australia, New Zealand, Canada, the United Kingdom, the Netherlands, Hong Kong, Japan, Taiwan, Korea, Singapore, Mexico, Malaysia, Philippines, and the United States. Many people are considering to join USANA all over the world and many thousands have already joined either with a home business,as distributors or as customers. The companys four product brands are: USANA Nutritionals, USANA Foods, Sense Beautiful Science, and Rev3 Energy...