In a secondary analysis , chocolate consumption was inversely associated with risk of HF in men whose BMI was < 25kg/m ( 2 ) [ HR ( 95 % CI ) = 0.59 ( 0.37-0 .94 ) for consumption of 5 + servings/week , P for linear trend = 0.03 ) but not in those with BMI of 25 + kg/m ( 2 ) [ HR ( 95 % CI ) = 1.01 ( 0.73-1 .39 ) , P for linear trend = 0.42 , P for interaction = 0.17 ) .