Exhibit 16.1

September 20, 2013

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Commissioners:

We have read the statements made by USANA Health Sciences, Inc. (copy attached), which we understand will be filed with the Securities and Exchange Commission, pursuant to Item 4.01 of Form 8-K, as part of the Form 8-K of USANA Health Sciences, Inc.dated September 16, 2013.  We agree with the statements concerning our Firm in such Form 8-K.

Very truly yours,

/s/PricewaterhouseCoopers LLP