Food label ingredient lists in which the first or second item is "partially hydrogenated" contain higher levels of trans fatty acids.

Partially Hydrogenated

Refers to oils that have been processed to convert some of their unsaturated fats into saturated fats, often increasing shelf life but also unhealthy trans fats.

Trans Fatty Acids

A type of unhealthy fat that occurs in small amounts in meat and milk products, and in larger amounts in artificially hydrogenated vegetable oils.