A TT genotype for the proliferator-activated receptor alpha polymorphism ( PPARA rs135549 SNP ) was significantly associated with a reduction in the TC/HDL and LDL/HDL ratios after 12 mo of S milk intake ( mean reduction -0.29 , 95 % confidence interval [ CI ] , -0.63 to 0.05 ; P = 0.0015 and -0.31 , 95 % CI , -0.58 to -0.03 ; P = 0.0005 , respectively ) .