Heart disease is the leading cause of death in the United States, but many don't have the right facts about its prevention.

Cardiologist Dr. Nieca Goldberg says conventional wisdom is typically way off the mark. New studies show long-held beliefs, including information about vitamins, weight and cholesterol, are shedding new light on the role they play in heart disease.

For example, many believe they're safe from having a heart attack if their weight and cholesterol are at normal levels. However, there are other factors, such as genetic ones, that might not be so obvious to the eye.

Source:  CBS News.com, Heart Health Myths Debunked