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The Different Types of Fat
There are different kinds of fats in our foods. Some can hurt
our health, while others aren't so bad - some are even good for
you! Here's what you need to know:
- Monounsaturated fats (canola, olive and peanut oils, and avocados)
and polyunsaturated fats (safflower, sesame, sunflower seeds,
and many other nuts and seeds) don't raise your LDL ("bad")
cholesterol levels but can raise your HDL ("good") cholesterol
levels. To keep healthy, it is best to choose foods with these
fats.
- Saturated fat, trans fatty acids, and dietary cholesterol raise
your LDL ("bad") blood cholesterol levels, which can
lead to heart disease. Saturated fat is found mostly in food from
animals, like beef, veal, lamb, pork, lard, poultry fat, butter,
cream, whole milk dairy products, cheeses, and from some plants,
such as tropical oils. Tropical oils include coconut, palm kernel,
and palm oils that are found in commercial cakes, cookies, and
salty snack foods. Unlike other plant oils, these oils have a
lot of saturated fatty acids. Some processed foods (such as frozen
dinners and canned foods) can be quite high in saturated fat -
it' s best to check package labels before purchasing these types
of foods.
- Trans fatty acids (TFAs) are formed during the process of making
cooking oils, margarine, and shortening and are in commercially
fried foods, baked goods, cookies, and crackers. Some are naturally
found in small amounts in some animal products, such as beef,
pork, lamb, and the butterfat in butter and milk. In studies,
TFAs tend to raise our total blood cholesterol. TFAs also tend
to raise LDL ("bad") cholesterol and lower HDL ("good")
cholesterol. One study found that the four main sources of trans
fatty acids in women's diets come from margarine, meat (beef,
pork, or lamb), cookies, and white bread. At this time, TFAs are
not listed on nutrition labels, but that will soon change. Although
it might take a couple of years to begin seeing it, the Food and
Drug Administration (FDA) is now asking food manufacturers to
begin labeling TFA content. And some food manufacturers are announcing
they are taking TFAs out of their food.
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