Increased dairy food intake by 3.0 ( 1.2 ) serves / day for 1month was associated with small increases in plasma levels of myristic ( +0.05 , 95 % confidence level-0 .08 to 0.13 , p = 0.07 ) , pentadecanoic ( +0.014 , 95 % confidence level -0.016 to 0.048 , p = 0.02 ) and margaric acid ( +0.02 , -0.03 to 0.05 , p = 0.03 ) .