Scientists say they have found proof that another "bad" type of cholesterol contributes to heart disease. They say unlike the well-known LDL cholesterol, lipoprotein (a) or Lp(a) cannot be controlled by cutting down on dietary fats or taking a statin drug. But researchers at Oxford University say high levels do not carry the same risk as LDL. They told the New England Journal of Medicine that some existing drugs, such as Niacin, and others coming on to the market might work to minimise its effects. LDL is considered the aggressive tiger of the cholesterol world, furring the arteries and greatly increasing heart risk. Scientist believes Lp (a), which is inherited, is more of a pussycat, although it does appear to upset blood clotting. Professor Peter Weisberg of the British Heart Foundation, which funded the study, said everyone could reduce their risk of heart disease by eating a healthy balanced diet, being physically active and avoiding smoking. <br/>