    <SEC-DOCUMENT>0001341004-17-000266-index.html : 20170425
    <SEC-HEADER>0001341004-17-000266.hdr.sgml : 20170425
    <ACCEPTANCE-DATETIME>20170425170534
    ACCESSION NUMBER:		0001341004-17-000266
    CONFORMED SUBMISSION TYPE:	486BPOS
    PUBLIC DOCUMENT COUNT:		8
    FILED AS OF DATE:		20170425
    DATE AS OF CHANGE:		20170425
    EFFECTIVENESS DATE:		20170425

    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:		486BPOS
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-210770
    		FILM NUMBER:		17781794

    	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:		486BPOS
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-21702
    		FILM NUMBER:		17781795

    	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>486BPOS
    <SEQUENCE>1
    <FILENAME>bme_486b.htm
    <DESCRIPTION>486BPOS
    <TEXT>
    Document 1 - file: bme_486b.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2J CUST CONTR
    <SEQUENCE>2
    <FILENAME>ex-j.htm
    <DESCRIPTION>EXHIBIT (J) - CUSTODY AGREEMENT
    <TEXT>
    Document 2 - file: ex-j.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2K OTH CONTRCT
    <SEQUENCE>3
    <FILENAME>ex-k2.htm
    <DESCRIPTION>EXHIBIT (K)(2) - ADMINISTRATION SERVICES AGREEMENT
    <TEXT>
    Document 3 - file: ex-k2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2N OTH CONSENT
    <SEQUENCE>4
    <FILENAME>ex-n.htm
    <DESCRIPTION>EXHIBIT (N) - CONSENT
    <TEXT>
    Document 4 - file: ex-n.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>image00001.jpg
    <TEXT>
    Document 6 - file: image00001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>image1.jpg
    <TEXT>
    Document 7 - file: image1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>image2.jpg
    <TEXT>
    Document 8 - file: image2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>image3.jpg
    <TEXT>
    Document 9 - file: image3.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>