Top nutritionists at Harvard have concluded that trans fat could be responsible for an many as 30,000 premature coronary deaths per year.
Trans fats cause significant and serious lowering of HDL (good) cholesterol and a significant and serious increase in LDL (bad) cholesterol; make the arteries more rigid; cause major clogging of arteries; cause insulin resistance; cause or contribute to type 2 diabetes; and cause or contribute to other serious health problems. It is recommended that if you eat 2000 calories a day to eat no more than 2 grams of trans fat a day.
Take a look at the trans fat in fast food:
One McDonald's large fries contains 8 grams of trans fat.
A McDonald's apple pie contains 4.5 grams of trans fat.
Four Girl Scout shortbread cookies contain 1.5 grams of trans fat.
A large order of KFC Popcorn Chicken contains 7 grams of trans fat.
KFC's Chicken Pot Pie contains 14 grams of trans fat.
A typical 3-piece KFC Extra Crispy combo meal, with a drumstick, two thighs, potato wedges, and a biscuit contains 15 grams of trans fat.
What not to eat
1. Don't eat any product which has the words "partially hydrogenated" or "shortening" in the ingredients list.
The U.S. Food and Drug Administration advises:
Consumers can know if a food contains trans fat by looking at the ingredient list on the food label. If the ingredient list includes the words “shortening,” “partially hydrogenated vegetable oil” or “hydrogenated vegetable oil,” the food contains trans fat. Because ingredients are listed in descending order of predominance, smaller amounts are present when the ingredient is close to the end of the list.
Note: Fully hydrogenated oils do not contain trans fat. However, if the word "hydrogenated" is used without the word "partially," that product may contain partially hydrogenated oil. Not all labeling is accurate and the word "partially" may have been wrongfully omitted on some products.
2. If the label says zero trans fats, don't believe it. If the words "partially hydrogenated" or "shortening" are in the ingredients list, it DOES contain trans fat.
Under FDA regulations in effect in the United States, "if the serving contains less than 0.5 gram [of trans fat], the content, when declared, shall be expressed as zero."
Source : http://www.bantransfats.com/