<SEC-DOCUMENT>0001193125-21-140508-index.html : 20210429
<SEC-HEADER>0001193125-21-140508.hdr.sgml : 20210429
<ACCEPTANCE-DATETIME>20210429162104
ACCESSION NUMBER:		0001193125-21-140508
CONFORMED SUBMISSION TYPE:	486BPOS
PUBLIC DOCUMENT COUNT:		11
FILED AS OF DATE:		20210429
DATE AS OF CHANGE:		20210429
EFFECTIVENESS DATE:		20210430

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:		21870962

	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:		1933 Act
		SEC FILE NUMBER:	333-230158
		FILM NUMBER:		21870961

	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
<IS-FILER-A-NEW-REGISTRANT>N
<IS-FILER-A-WELL-KNOWN-SEASONED-ISSUER>N
<FILED-PURSUANT-TO-GENERAL-INSTRUCTION-A2>N
</SEC-HEADER>
<DOCUMENT>
<TYPE>486BPOS
<SEQUENCE>1
<FILENAME>d173219d486bpos.htm
<DESCRIPTION>BLACKROCK HEALTH SCIENCES TRUST
<TEXT>
Document 1 - file: d173219d486bpos.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(B)(2)
<SEQUENCE>2
<FILENAME>d173219dex99b2.htm
<DESCRIPTION>AMENDMENT NO. 1 TO AMENDED AND RESTATED BYLAWS
<TEXT>
Document 2 - file: d173219dex99b2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(G)(4)
<SEQUENCE>3
<FILENAME>d173219dex99g4.htm
<DESCRIPTION>AMENDMENT NO. 2 TO AMENDED AND RESTATED MASTER ADVISORY FEE WAIVER AGREEMENT
<TEXT>
Document 3 - file: d173219dex99g4.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(G)(5)
<SEQUENCE>4
<FILENAME>d173219dex99g5.htm
<DESCRIPTION>AMENDMENT NO. 3 TO AMENDED AND RESTATED MASTER ADVISORY FEE WAIVER AGREEMENT
<TEXT>
Document 4 - file: d173219dex99g5.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(G)(6)
<SEQUENCE>5
<FILENAME>d173219dex99g6.htm
<DESCRIPTION>AMENDMENT NO. 4 TO AMENDED AND RESTATED MASTER ADVISORY FEE WAIVER AGREEMENT
<TEXT>
Document 5 - file: d173219dex99g6.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(K)(1)
<SEQUENCE>6
<FILENAME>d173219dex99k1.htm
<DESCRIPTION>FORM OF AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT
<TEXT>
Document 6 - file: d173219dex99k1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(K)(3)
<SEQUENCE>7
<FILENAME>d173219dex99k3.htm
<DESCRIPTION>FORM OF SEVENTH AMENDED AND RESTATED SECURITIES LENDING AGREEMENT
<TEXT>
Document 7 - file: d173219dex99k3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(N)
<SEQUENCE>8
<FILENAME>d173219dex99n.htm
<DESCRIPTION>INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM CONSENT
<TEXT>
Document 8 - file: d173219dex99n.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(R)
<SEQUENCE>9
<FILENAME>d173219dex99r.htm
<DESCRIPTION>CODE OF ETHICS OF THE REGISTRANT AND THE INVESTMENT ADVISOR
<TEXT>
Document 9 - file: d173219dex99r.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g173219g0429043351244.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: g173219g0429043351244.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>g173219gra279.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: g173219gra279.gif

</DOCUMENT>
</SEC-DOCUMENT>