Postprandial lipemia activates leukocytes, which is linked to atherosclerosis.

We measured fasting and postprandial lipids and leukocyte activation.

Fasting triglycerides and apo B48 were related to fasting leukocyte activation.

In the postprandial state, only apo B48 correlated with leukocyte activation.

Thus, chylomicron remnants may induce postprandial leukocyte activation.