The latest CDC statistics on Cardiovascular disease are rather grim; With an alarming number of approximately 659,000 people dying each year in the US alone, CVD is not to be taken lightly. Cardiovascular disease (CVD) is the leading cause of death not only in the US, but also worldwide. Previous studies have shown that eating more seafood was associated with a reduction in all causes and CVD-related mortality. Seafood is known to contain the following: heart-healthy omega-3 fatty acids and omega-6 fats Iron Iodine (during pregnancy) Choline Based on information published by the FDA, Choline, for example, supports the development of the baby’s spinal cord. The iron and zinc found in fish help to support children’s immune systems. Protein, vitamin B12, vitamin D, and selenium are also other sources of nutrients derived from fish. Nonetheless, many people choose to limit their seafood consumption because of fear of mercury exposure from seafood. Most Common Way People Are Exposed to M
A Comparison of Saturated and Unsaturated Fats
 |
| To read, open the image in a new window. |
Butter versus Margarine
Based on findings, the distinguishing characteristic between margarine and butter is not the caloric content, as they are about equal, but the composition of their fatty acids. About 62% of the fatty acids in the butter are saturated compared with 20% in margarine. During the manufacturing process of margarine and some other vegetable shortenings, unsaturated corn, soybean, or sunflower oil is partially hydrogenated---a process called hydrogenation wherein hydrogen is added to the oil.
This causes the chemical structure of the original polyunsaturated oil to be arranged to a liquid not found in nature that is more hardened (saturated) but not as hard as butter. When one of the hydrogen atoms along the carbon chain moves from its naturally occurring position(cis position) to the opposite side of the double bond that separates two carbon atoms (trans position), the restructured fatty acid is referred to as a trans unsaturated fatty acid. From 17 to 25% of the fatty acids in margarine are trans unsaturated fatty acids, compared with only 7% in butter fat.
The fact that margarine is made from vegetable oil, it contains no cholesterol; butter, on the other hand, is made from a dairy source and contains between 11 to 15 mg of cholesterol per teaspoon. The current controversy over margarine versus butter centers on the possible detrimental health effects of trans, unsaturated fatty acids. A diet high in margarine and other foods containing partially hydrogenated vegetable oils increases LDL cholesterol concentration to about the same degree as a diet high in saturated fat. Unlike saturated fats, however, they also decrease the concentration of the beneficial HDL cholesterol. Thus Scientists estimate that the dietary trans unsaturated fatty acids do contribute to increased risk for heart disease.
Conclusion
Since there seems to be a controversy over whether a diet high in margarine can increase LDL cholesterol to approximately the same degree as a diet high in saturated fat, and that it may also cause a reduction of good (HDL) cholesterol, the best advice here is to use margarine in moderation. Better yet, instead of using butter or margarine, you can use olive oil to lightly sprinkle your toast and vegetable oil to cook or bake. You may also baste roasted food with tomato juice, pureed vegetables or fruits, in place of oil.
Chemical Structure of Saturated and Unsaturated Fats
Comments
Post a Comment