( ( Taking estrogens ) ( ( may ( cause ( changes ( in ( your ( blood ( clotting system ) ) ) ) ) ) ) . ) )
(ROOT (S (S (VP (VBG Taking) (NP (NNS estrogens)))) (VP (MD may) (VP (VB cause) (NP (NP (NNS changes)) (PP (IN in) (NP (PRP$ your) (NN blood) (VBG clotting) (NN system)))))) (. .)))
Taking estrogens may cause changes in your blood clotting system.
(ROOT (S (NP (NNP Estrogen)) (VP (VBZ causes) (NP (NP (DT the) (NNS changes)) (PP (IN of) (NP (NN puberty))))) (. .)))