Zacks Research downgraded shares of USANA Health Sciences (NYSE:USNA – Free Report) from a hold rating to a strong sell rating in a research report sent to investors on Thursday,Zacks.com reports. Get USANA Health Sciences alerts:Read Our Latest Research Report on USANA Health SciencesUSANA Health Sciences Trading Up 3.6%Shares of USNA stock opened at $15.43 on Thursday. USANA Health Sciences Stock Rating Lowered by Wall Street ZenWall Street Zen lowered its stock rating on USANA, adding to uncertainty around the company’s outlook. USANA Health Sciences Company Profile(Get Free Report)USANA Health Sciences, Inc is a Utah‐based company that develops, manufactures and distributes nutritional supplements and personal care products through a network of independent distributors. Recommended StoriesReceive News & Ratings for USANA Health Sciences Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for USANA Health Sciences and related companies with MarketBeat.com's FREE daily email newsletter.