( They ( ( ( are ( so ( dependent ( on protein ) ) ) ) ( that ( ( if ( ( their diet ) ( is ( ( lacking ( an ( adequate amount ) ) ) ( to ( supply ( their ( energy needs ) ) ) ) ) ) ) ) ( , ( they ( will ( ( break down ) ( their ( own ( body ( ( muscle and ) organs ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBP are) (ADJP (RB so) (JJ dependent) (PP (IN on) (NP (NN protein)))) (SBAR (IN that) (S (SBAR (IN if) (S (NP (PRP$ their) (NN diet)) (VP (VBZ is) (VP (VBG lacking) (NP (DT an) (JJ adequate) (NN amount)) (S (VP (TO to) (VP (VB supply) (NP (PRP$ their) (NN energy) (NNS needs))))))))) (, ,) (NP (PRP they)) (VP (MD will) (VP (VB break) (PRT (RP down)) (NP (PRP$ their) (JJ own) (NN body) (NN muscle) (CC and) (NNS organs))))))) (. .)))
They are so dependent on protein that if their diet is lacking an adequate amount to supply their energy needs, they will break down their own body muscle and organs.
(ROOT (S (NP (DT A) (JJ healthy) (NN diet)) (VP (VBZ is) (ADJP (JJ important)) (SBAR (IN because) (S (NP (PRP it)) (VP (VBZ supplies) (NP (NP (NP (DT the) (NN body) (POS 's)) (NNS needs)) (PP (IN for) (NP (NN growth) (CC and) (NN energy)))))))) (. .)))