REDUCING CHOLESTEROL: AVOID TRANS FATS
Thursday, April 23rd, 2009This is the worst kind of fat. We are continually being told that to reduce our risk of heart disease we must reduce our fat consumption, especially saturated fat. In its place we are encouraged to consume vegetable oil and vegetable margarine.
Just because vegetable oil comes from vegetables and is cholesterol free does not mean it is healthy for our heart. The main problem with vegetable oil is how it is processed. Modern manufacturing techniques process the oil in a way that exposes it to high temperatures, oxygen, light and chemical solvents. This damages the fragile essential fatty acids in the oil, and creates many toxic components, including trans fatty acids. When these same oils are used to manufacture margarine, even more toxic by-products are created, and because the oil has been hardened, more trans fatty acids are usually created.
The harmful effects of trans fatty acids include:
Lower HDL “good” cholesterol.
Raise LDL “bad” cholesterol.
Raise lipoprotein (a).
Inhibit insulin binding, promoting obesity, Syndrome X and diabetes.
Interfere with various enzymes, including delta-6-desaturase, needed for essential fatty acid metabolism.
Promote the development of fatty liver.
Promote inflammation in the body by stimulating the release of inflammatory cytokines.
How to avoid trans fatty acids in your diet
The easiest way to do this is to avoid foods that state the words “vegetable oil” on the label. You can assume that this term means highly processed, poor quality, refined vegetable oil. The term “hydrogenated vegetable oil” usually means that the product contains trans fatty acids.
Vegetable fat usually means fully or partially hydrogenated vegetable oil, and should be avoided also.
Another problem with the term “vegetable oil” is that you don’t know which vegetable oil in particular has been used. In Australia it is often cottonseed oil that is used in vegetable oil blends (such as cooking oil and I margarine), fried or baked foods and snack foods. Cottonseed oil is very unhealthy; you can read about it in chapter twelve.
If you eat takeaway fried foods, you are guaranteed to be consuming large amounts of rancid, oxidized fats rich in trans fatty acids. In many restaurants cheap vegetable oil and margarine are used. The word “butter” on the menu usually means margarine because it is cheaper and has a longer shelf life. Always ask about the type of fat that your food is being cooked in. Extra virgin olive oil, butter and unrefined coconut fat (not copha) are the healthiest options.
The nutrition panel of many foods now lists the trans fat content of the food. At this time, Australia does not have a stance on what level of trans fats can be safely consumed. However, according to the USA, there is no 1 safe level of trans fat intake; they should be entirely avoided. By the end of 2005, the Heart Foundation will only allow its tick on margarines that contain one percent or less of their total fat content as trans fats. This is half the maximum level allowed by the government of Denmark.
*46/53/5*