**2.8 Apolipoproteins A1, A2, and B**

The consumption of linoleic acid increased apolipoprotein A1 compared to a typical U.S. diet [54]. Additionally, linoleic acid increased apolipoprotein A2 compared to EPA and DHA [55]. In contrast, apolipoproteins A1 and A2 decreased after following a diet rich in linoleic acid compared to a diet high in oleic acid [65]. Apolipoprotein A1 concentrations did not differ when comparing low and high linoleic acid intakes [60], and consumption of linoleic acid compared to diets containing high amounts of stearic acid or oleic acid [66]. There were decreases in apolipoprotein B concentrations after linoleic consumption compared to a typical U.S. diet [54], stearic acid, elaidic acid (a trans-fatty acid) [56], or SFAs [55]. There were no significant differences with respect to apolipoprotein B after intakes of linoleic acid compared with oleic acid [65, 66] or stearic acid [66].
