Cardio vascular health is national health priority  affecting many Australian. Elevated levels of blood cholesterol have links to cardio vascular disease. ( two hundred words)

a. Name any three roles of cholesterol in body.

b. What role do low- density lipoproteins (LDL) and high density lipoproteins (HDL) play in cholesterol transportation?  How is each relevant to   cardio vascular system?

c. Name any two dietary recommendation , together with relevant food source and their impact, to ensure blood cholesterol levels are optimal so as to help maintain a healthy cardiovascular system?