    <SEC-DOCUMENT>0001193125-19-069136-index.html : 20190528
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    ACCESSION NUMBER:		0001193125-19-069136

    CONFORMED SUBMISSION TYPE:	N-2

    PUBLIC DOCUMENT COUNT:		20

    FILED AS OF DATE:		20190308

    DATE AS OF CHANGE:		20190426

    FILER:

    	COMPANY DATA:

    		COMPANY CONFORMED NAME:			BlackRock Health Sciences Trust

    		CENTRAL INDEX KEY:			0001314966

    		IRS NUMBER:				000000000

    		STATE OF INCORPORATION:			DE

    	FILING VALUES:

    		FORM TYPE:		N-2

    		SEC ACT:		1933 Act

    		SEC FILE NUMBER:	333-230158

    		FILM NUMBER:		19669274

    	BUSINESS ADDRESS:

    		STREET 1:		100 BELLEVUE PARKWAY

    		CITY:			WILMINGTON

    		STATE:			DE

    		ZIP:			19809

    		BUSINESS PHONE:		(888) 825-2257

    	MAIL ADDRESS:

    		STREET 1:		100 BELLEVUE PARKWAY

    		CITY:			WILMINGTON

    		STATE:			DE

    		ZIP:			19809

    FILER:

    	COMPANY DATA:

    		COMPANY CONFORMED NAME:			BlackRock Health Sciences Trust

    		CENTRAL INDEX KEY:			0001314966

    		IRS NUMBER:				000000000

    		STATE OF INCORPORATION:			DE

    	FILING VALUES:

    		FORM TYPE:		N-2

    		SEC ACT:		1940 Act

    		SEC FILE NUMBER:	811-21702

    		FILM NUMBER:		19669273

    	BUSINESS ADDRESS:

    		STREET 1:		100 BELLEVUE PARKWAY

    		CITY:			WILMINGTON

    		STATE:			DE

    		ZIP:			19809

    		BUSINESS PHONE:		(888) 825-2257

    	MAIL ADDRESS:

    		STREET 1:		100 BELLEVUE PARKWAY

    		CITY:			WILMINGTON

    		STATE:			DE

    		ZIP:			19809

    </SEC-HEADER>

    <DOCUMENT>
    <TYPE>N-2
    <SEQUENCE>1
    <FILENAME>d715940dn2.htm
    <DESCRIPTION>BLACKROCK HEALTH SCIENCES TRUST
    <TEXT>
    Document 1 - file: d715940dn2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(J)
    <SEQUENCE>2
    <FILENAME>d715940dex99j.htm
    <DESCRIPTION>MASTER CUSTODIAN AGREEMENT
    <TEXT>
    Document 2 - file: d715940dex99j.htm

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    <TYPE>EX-99.(K)(2)
    <SEQUENCE>3
    <FILENAME>d715940dex99k2.htm
    <DESCRIPTION>ADMINISTRATION AND FUND ACCOUNTING SERVICES AGREEMENT
    <TEXT>
    Document 3 - file: d715940dex99k2.htm

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    <TYPE>EX-99.(S)(1)
    <SEQUENCE>4
    <FILENAME>d715940dex99s1.htm
    <DESCRIPTION>POWER OF ATTORNEY OF THE REGISTRANT'S TRUSTEES
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    Document 4 - file: d715940dex99s1.htm

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    Document 7 - file: g715940g20v90.jpg

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    Document 12 - file: g715940g64j54.jpg

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    Document 14 - file: g715940g70c87.jpg

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    Document 21 - file: filename21.htm

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