 SALT LAKE CITY--BUSINESS WIRE--USANA Health Sciences, Inc. NYSE: USNA today announced financial results for its fiscal fourth quarter and full-year ended January 2, 2021. Key Q4 and Full Year 2020 Financial Operating Highlights Fourth quarter net sales increased 14.5 year-over-year to 310.5 million. Fourth quarter diluted EPS increased 32.6 year-over-year to a record 1.87. Fiscal year net sales increased 7.0 year-over-year to 1.135 billion. Fiscal year diluted EPS increased 32.9 