After six months of dietary treatment , body weight decreased in all subjects ( -8.7 % ; confidence interval ( 95 % CI ) = 7.0-9 .7 ) and also self-perceived depression ( -37.9 % ; 95 % CI = 2.7-4 .9 ) , as well as circulating leptin ( -20.1 % ; 95 % CI = 1.8-6 .8 ) , CRP ( -42.8 % ; 95 % CI = 0.6-3 .0 ) and insulin ( -37.7 % ; 95 % CI = 4.1-7 .2 ) concentrations .