According to a recent study published in the Journal of the American Medical Association, another form of cholesterol--lipoprotein (a)--can also cause problems. 45,000 men and women participated in the study, and those with the highest levels of lipoprotein (a) had the most heart attacks.
Statin drugs, taken by millions of people to lower cholesterol, do not affect lipoprotein (a) levels. Researchers say that may explain why statins don't always work for everyone.
Time will tell whether this new type of cholesterol is significant enough to be included in routine screenings. Because lipoprotein (a) levels are believed to be largely based on genetics, researchers hope that drug companies will soon begin to develop medications to control them.