The government is trying to banish trans-fats from food, why ar they so bad for u?

Cause many illnesses: Most trans fats come from partially hydrogenated oils found in many processed & fried foods like french fries & donuts. Simply put, trans fats are highly toxic.They cause inflammation, raise cholesterol & may cause up to 100, 000 deaths in the us from heart disease each year. They also increase risk of alzheimer's disease, diabetes, obesity, depression & infertility. See my comment for some links.

Heart disease: Meats have some transfats, but most are manmade. Transfats are made by hydrogenating oils, which turns them into solids (shortening). Transfats are used in processed foods b/c they last longer on shelf that way -- cookies/pie crusts/chips/popcorn/donuts/creamer/margarine. They raise LDL (bad) and lower HDL (good) cholesterol, which leads to heart disease. Saturated fats are just as bad!