<SEC-DOCUMENT>0000844779-18-000057-index.html : 20180301
<SEC-HEADER>0000844779-18-000057.hdr.sgml : 20180301
<ACCEPTANCE-DATETIME>20180301112939
ACCESSION NUMBER:		0000844779-18-000057
CONFORMED SUBMISSION TYPE:	NSAR-B
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20171231
FILED AS OF DATE:		20180301
DATE AS OF CHANGE:		20180301
EFFECTIVENESS DATE:		20180301

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:		NSAR-B
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-21702
		FILM NUMBER:		18655345

	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>NSAR-B
<SEQUENCE>1
<FILENAME>bmeanswer.fil
<TEXT>
Document 1 - file: bmeanswer.fil

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77B ACCT LTTR
<SEQUENCE>2
<FILENAME>77BBME.txt
<TEXT>
Document 2 - file: 77BBME.txt

</DOCUMENT>
</SEC-DOCUMENT>