( ( ( The causes ) ( of ( heart disease ) ) ) ( ( vary ( by ( type ( of ( heart disease ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS causes)) (PP (IN of) (NP (NN heart) (NN disease)))) (VP (VBP vary) (PP (IN by) (NP (NP (NN type)) (PP (IN of) (NP (NN heart) (NN disease)))))) (. .)))
The causes of heart disease vary by type of heart disease.
(ROOT (S (NP (JJ Lifestyle) (NNS diseases)) (VP (VBP are) (NP (NP (NNS diseases)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (VP (VBN caused) (PP (IN by) (NP (NNS choices))) (SBAR (IN that) (S (NP (NNS people)) (VP (VBP make) (PP (IN in) (NP (PRP$ their) (JJ daily) (NNS lives)))))))))))) (. .)))
Lifestyle diseases are diseases that are caused by choices that people make in their daily lives.