Butter vs Margarine
Butter is rich in trace minerals, especially selenium, a powerful antioxidant. Ounce for ounce, butter has more selenium per gram than either whole wheat or garlic. Butter also supplies iodine, needed by the thyroid gland (Vitamin A is also needed by the thyroid gland.) Margarine is very high in trans-fatty acids which are carcinogenic and mutagenic. The US federal government requires the labeling of all food in such a way as to disclose amounts of trans-fat in products. Many brands label their products legally now as “zero grams” trans-fat, which in fact means less than 500 mg trans-fat per serving. I don’t know how they get away with this one.