Fat or fiction?

The idea that eating saturated fat--found in high levels in animal products such as meat and dairy--directly raises the risk of a heart attack has been a mainstay of nutrition science since the 1970s. Instead, people are urged to favor the "healthy" fats found in vegetable oils and foods such as fish, nuts and seeds. Here, White examines how saturated fat in food affects one's health, how it is handled by the body, and how it differs from other types of fat.