( ( Adequate calcium ) ( ( helps ( prevent ( ( osteoporosis , ) ( ( a disease ) ( that ( causes ( ( the bones ) ( to ( ( become ( ( porous and ) fragile ) ) ( because ( calcium ( is ( withdrawn ( faster ( than ( it ( is deposited ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Adequate) (NN calcium)) (VP (VBZ helps) (VP (VB prevent) (NP (NP (NNS osteoporosis)) (, ,) (NP (NP (DT a) (NN disease)) (SBAR (WHNP (WDT that)) (S (VP (VBZ causes) (S (NP (DT the) (NNS bones)) (VP (TO to) (VP (VB become) (ADJP (JJ porous) (CC and) (JJ fragile)) (SBAR (IN because) (S (NP (NN calcium)) (VP (VBZ is) (VP (VBN withdrawn) (ADVP (ADVP (RBR faster)) (SBAR (IN than) (S (NP (PRP it)) (VP (VBZ is) (ADJP (JJ deposited)))))))))))))))))))) (. .)))
Adequate calcium helps prevent osteoporosis, a disease that causes the bones to become porous and fragile because calcium is withdrawn faster than it is deposited.
(ROOT (S (NP (RB Too) (JJ little) (NN calcium)) (VP (MD can) (VP (VB cause) (NP (DT the) (NN disease) (NN osteoporosis)))) (. .)))