<SEC-DOCUMENT>0000940400-17-000103-index.html : 20170227
<SEC-HEADER>0000940400-17-000103.hdr.sgml : 20170227
<ACCEPTANCE-DATETIME>20170227114323
ACCESSION NUMBER:		0000940400-17-000103
CONFORMED SUBMISSION TYPE:	NSAR-B
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20161231
FILED AS OF DATE:		20170227
DATE AS OF CHANGE:		20170227
EFFECTIVENESS DATE:		20170227

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:		17640266

	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>brHealth.fil
<TEXT>
Document 1 - file: brHealth.fil

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77B ACCT LTTR
<SEQUENCE>2
<FILENAME>brHealth77b.txt
<TEXT>
Document 2 - file: brHealth77b.txt

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77Q1 OTHR EXHB
<SEQUENCE>3
<FILENAME>brHealth77q1.txt
<TEXT>
Document 3 - file: brHealth77q1.txt

</DOCUMENT>
</SEC-DOCUMENT>