Relative risk reduction by 49%!
Conjugated linoleic acid in adipose tissue and risk of myocardial infarction
Results: Adipose tissue 9c,11t-CLA was associated with a lower risk of MI in basic and multivariate models. Compared with the lowest quintile, odds ratios and 95% CIs were 0.80 (0.61, 1.04) for the second, 0.86 (0.64, 1.14) for the third, 0.62 (0.46, 0.84) for the fourth, and 0.51 (0.36, 0.71) for the fifth quintiles (P for trend <0.0001). Dairy intake was not associated with risk of MI, despite a strong risk associated with saturated fat intake [*].
*) The last sentence is a bul..t of course. There is no extra cardiac risk associated with saturated fat as many other studies such as this this or this have shown.
(JC - thanks for the link)