Notes 3-04-08 - Notes 3-04-08 Lipids & Fats, Continued...

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Notes 3-04-08 Sterols are a family of molecules consisting of interconnecting carbon rings. The most common form of sterol in the human body is cholesterol . Roles in the Body: Starting materials for bile acids, sex hormones, adrenal hormones, and Vitamin D. Structural component of cell membranes Liver produces ~ 800- 1500 mg of cholesterol/ day (endogenous). Exogenous is from an outside source (food). Facts About Cholesterol Is only found in foods from animal sources The body routinely manufactures cholesterol for its own use. Dietary Sources o Organ meats (337 mg in 3 oz liver) o Egg yolk (212 mg in 1 large egg) o Meat (60- 80 mg in 3 oz beef, pork, chicken) o Shellfish & fish (~ 60 mg in 3 oz) o Dairy products (25- 30 mg in 1 oz cheese or 8 oz whole milk) Plant Sterols From cell membranes of plants Not well absorbed Interfere with cholesterol absorption Food sources: broccoli, almonds, wheat germ. Also available as commercially prepared spreads and dietary supplements
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Notes 3-04-08 - Notes 3-04-08 Lipids & Fats, Continued...

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