CRP and Parkinson disease: When the PD and VP subjects were divided into two groups (age≤60,age>60), the levels of CRP in the PD patients above 60 years old were significantly higher than those in the PD patients younger than 60 years old (3.04 vs.1.47, P = 0.005, Table 3), and the levels of Hcy in VP patients above 67 years old were significantly higher than those in VP patients younger than 67 years old (16.79 vs. 12.78, P = 0.009, Table 3)