The most
debated issue in the health circuit is the use of fats and oils, and
the heat is due to the effect of fat in building up cholesterol that
clogs the arteries, including those that supply blood to the heart,
causing heart related problems. It is necessary to include fats in
our diet as many of them are known sources of fat soluble vitamins.
Cooking
oil comes from animal or plant sources, and is processed and purified
before being consumed. No more than 30-percent of a day's calories
should come from fat (a tablespoon of virtually any vegetable oil
contains 120 calories).
The fat-soluble
vitamins and minerals found in cooking oils are: vitamins (A and E),
minerals, amino acids, essential fatty acids, and antioxidants.
Types
of oil: grape seed oil, safflower oil, sunflower oil, olive oil,
soybean oil, canola oil, peanut oil, cashew oil, sesame oil and rice
bran oil.
The danger
comes from saturated fats that are solid at room temperature.
These are mostly of animal origin, found in meat, poultry, and dairy
products. Some vegetarian sources are also saturated: Palm, palm kernel
and coconut oil. What they do is produce more of bad cholesterol (LDL)
in the blood. This excess fat gets deposited in the arteries, clogging
and narrowing them, reducing blood flow.
Trans
Fats: In order to convert unsaturated fats into saturated ones
to increase shelf life and other benefits, hydrogenation is done.
This makes for stuff like margarine. These trans fats are as bad as
saturated ones.
Polyunsaturated
oils, which include vegetable oils like corn, soy, safflower and
canola, contain trans-fatty acids introduced during the hydrogenation
process, which results in increased dangers of chronic diseases such
as breast cancer and heart disease. They decrease bad cholesterol
levels, as well as the good cholesterol (HDL). They contain certain
essential omega acids, but their use should be limited.
Certain unique polyunsaturated fats called Omega-3 fatty acids
are found in some types of fish (salmon, albacore, tuna, mackerel,
sardines, herring and rainbow trout). These reduce the clotting ability
of blood, decreasing risk of artery blockage.
Oils
high in monounsaturated fats - such as olive oil, Palm, palm
kernel or rapeseed oil - may actually be beneficial for your heart
and arteries. If you have heart disease or are at high risk for heart
disease, these oils are smart choices.