( ( ( A diet ) ( rich ( in ( ( ( ( ( calcium and ) ( vitamin D ) ) , ) and ) ( regular ( weight-bearing exercise ) ) ) ) ) ) ( ( is ( essential ( to ( help ( ( prevent osteoporosis ) ( from developing ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (NN diet)) (ADJP (JJ rich) (PP (IN in) (NP (NP (NN calcium)) (CC and) (NP (NNP vitamin) (NNP D)) (, ,) (CC and) (NP (JJ regular) (JJ weight-bearing) (NN exercise)))))) (VP (VBZ is) (ADJP (JJ essential) (S (VP (TO to) (VP (VB help) (VP (VB prevent) (NP (NNS osteoporosis)) (PP (IN from) (NP (VBG developing))))))))) (. .)))
A diet rich in calcium and vitamin D, and regular weight-bearing exercise is essential to help prevent osteoporosis from developing.
(ROOT (S (NP (NP (DT A) (NN diet)) (ADJP (JJ rich) (PP (IN in) (NP (NN calcium) (CC and) (NN vitamin) (NNS d))))) (VP (MD may) (VP (VB reduce) (NP (NP (DT the) (NN risk)) (PP (IN of) (NP (NN osteoporosis) (CC and) (JJ related) (NN bone) (NNS fractures)))))) (. .)))