Transfat
What is it?
Transfat is a bad fat which results from the addition of hydrogen to vegetable oil in store bought foods like baked goods(cookies, cakes, biscuits), snacks(chips, crackers) and fried foods(like doughnuts, french fries). Partially hydrogenated vegetable oils are used in food for various reasons. It increases shelf life of the product and decreases the need for refrigeration.They are also inexpensive and enhance taste. Trans fats are also found in shortenings commonly used for deep frying in restaurants.
Some margarines(low fat butter) also are high in trans fat.
Health risks?
Trans fats are not essential for the body unlike good fats present in nuts and olive oil. They do not promote good health. The consumption of trans fats increases the risk of heart disease by raising levels of bad LDL cholesterol and lowering levels of good HDL cholestrol. Health authorities worldwide recommend that consumption of trans fat be reduced to trace amounts.
How do you know whether food contains trans fat?
Read the nutrition information label. Look for the words "partially hydrogenated" vegetable oil/soybean oil. That's another term for trans fat. The word "shortening" is also a clue: Shortening contains some trans fat.
Source:
http://www.mayoclinic.com/health/trans-fat/cl00032
http://en.wikipedia.org/wiki/Trans_fat


