Lipoprotein (a), abbreviated as Lp(a), is a special form of LDL cholesterol. It consists of an LDL particle that additionally carries a protein called apolipoprotein(a). The level of Lp(a) is largely genetically determined and can hardly be influenced by diet or exercise.
Elevated Lp(a) levels promote the formation of deposits in the vessels, inflammation, and blood clots. Therefore, Lp(a) is considered an independent risk factor for heart attack and stroke – even if other cholesterol levels are normal.