Drug abuse can affect the ability of the person to feel deep emotions like empathy.
1	Drug	drug	NOUN	NN	Number=Sing	2	compound	2:compound	_
2	abuse	abuse	NOUN	NN	Number=Sing	4	nsubj	4:nsubj	_
3	can	can	AUX	MD	VerbForm=Fin	4	aux	4:aux	_
4	affect	affect	VERB	VB	VerbForm=Inf	0	root	0:root	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	6:det	_
6	ability	ability	NOUN	NN	Number=Sing	4	obj	4:obj	_
7	of	of	ADP	IN	_	9	case	9:case	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	9:det	_
9	person	person	NOUN	NN	Number=Sing	6	nmod	6:nmod:of	_
10	to	to	PART	TO	_	11	mark	11:mark	_
11	feel	feel	VERB	VB	VerbForm=Inf	6	acl	6:acl:to	_
12	deep	deep	ADJ	JJ	Degree=Pos	13	amod	13:amod	_
13	emotions	emotion	NOUN	NNS	Number=Plur	11	obj	11:obj	_
14	like	like	ADP	IN	_	15	case	15:case	_
15	empathy	empathy	NOUN	NN	Number=Sing	13	nmod	13:nmod:like	SpaceAfter=No
16	.	.	PUNCT	.	_	4	punct	4:punct	_
