( ( Many ( of ( ( the diseases ) ( related ( to smoking ) ) ) ) ) ( ( are ( called ( ( ( lifestyle diseases ) , ) ( diseases ( that ( are ( ( caused ( by choices ) ) ( that ( people ( make ( in ( their ( daily lives ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Many)) (PP (IN of) (NP (NP (DT the) (NNS diseases)) (VP (VBN related) (PP (TO to) (NP (NN smoking))))))) (VP (VBP are) (VP (VBN called) (NP (NP (NN lifestyle) (NNS diseases)) (, ,) (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)))))))))))))) (. .)))
Many of the diseases related to smoking are called lifestyle diseases,  diseases that are caused by choices that people make in their daily  lives.
(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.