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      <link:roleType id="INCOMETAXESDetails" roleURI="http://www.usana.com/role/INCOMETAXESDetails">
        <link:definition>9955539 - Disclosure - INCOME TAXES (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType id="REDEEMABLENONCONTROLLINGINTERESTDetails" roleURI="http://www.usana.com/role/REDEEMABLENONCONTROLLINGINTERESTDetails">
        <link:definition>9955540 - Disclosure - REDEEMABLE NONCONTROLLING INTEREST (Details)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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  <xs:element id="usna_ProceedsFromAcquisitionOfBusinessWorkingCapitalAdjustment" abstract="false" name="ProceedsFromAcquisitionOfBusinessWorkingCapitalAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="usna_TheCompanyPolicyTextBlock" abstract="false" name="TheCompanyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="usna_CoreNutritionalMember" abstract="true" name="CoreNutritionalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="usna_ReportableSegmentPercentageOfConsolidatedNetSales" abstract="false" name="ReportableSegmentPercentageOfConsolidatedNetSales" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="usna_NumberOfGeographicRegions" abstract="false" name="NumberOfGeographicRegions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
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  <xs:element id="usna_FinishedGoodsMember" abstract="true" name="FinishedGoodsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="usna_LineOfCreditFacilityAdditionalIncreaseInMaximumBorrowingCapacity" abstract="false" name="LineOfCreditFacilityAdditionalIncreaseInMaximumBorrowingCapacity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="usna_DebtInstrumentCovenantRatioOfConsolidatedFundedDebtToAdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization" abstract="false" name="DebtInstrumentCovenantRatioOfConsolidatedFundedDebtToAdjustedEarningsBeforeInterestTaxesDepreciationAndAmortization" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
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  <xs:element id="usna_USANAFoodsMember" abstract="true" name="USANAFoodsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="usna_PersonalCareAndSkincareMember" abstract="true" name="PersonalCareAndSkincareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="usna_GreaterChinaMember" abstract="true" name="GreaterChinaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="usna_SoutheastAsiaPacificMember" abstract="true" name="SoutheastAsiaPacificMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="usna_NorthAsiaMember" abstract="true" name="NorthAsiaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="usna_AmericasAndEuropeMember" abstract="true" name="AmericasAndEuropeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="usna_DiscreteIncomeTaxBenefit" abstract="false" name="DiscreteIncomeTaxBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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</xs:schema>
