( ( The study ) ( ( suggested ( that ( leptin ( may ( be ( useful ( in ( ( the control ) ( of ( ( ( Type ( II diabetes ) ) , ) ( ( the form ) ( of ( ( the disease ) ( that ( often ( develops ( in ( older ( , ( overweight people ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN study)) (VP (VBD suggested) (SBAR (IN that) (S (NP (NN leptin)) (VP (MD may) (VP (VB be) (ADJP (JJ useful) (PP (IN in) (NP (NP (DT the) (NN control)) (PP (IN of) (NP (NP (NNP Type) (NNP II) (NNP diabetes)) (, ,) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NP (DT the) (NN disease)) (SBAR (WHNP (WDT that)) (S (ADVP (RB often)) (VP (VBZ develops) (PP (IN in) (NP (JJR older) (, ,) (JJ overweight) (NNS people))))))))))))))))))) (. .)))
The study suggested that leptin may be useful in the control of Type II diabetes, the form of the disease that often develops in older, overweight people.
(ROOT (S (NP (NNP Diabetes)) (VP (VP (VBZ is) (ADJP (JJ unpreventable) (PP (IN in) (NP (DT the) (NN type) (CD one) (NN form))))) (CC but) (VP (MD may) (VP (VB be) (VP (VBN prevented) (PP (IN by) (NP (NN diet))) (SBAR (IN if) (S (NP (PRP it)) (VP (VBZ is) (PP (IN of) (NP (DT the) (JJ second) (NN type)))))))))) (. .)))
Diabetes is unpreventable in the type one form but may be prevented by diet if it is of the second type.