Kentucky Fried Chicken to abandon trans fats
In today's Toronto Star, there's an article about KFC's plans to abandon the use of transfat-bearing hydrogenated vegetable oils in the frying of their foods.
Hydrogenation is a process of impregnating a polyunsaturated vegetable oil with hydrogen for the purpose of making it more stable at room temperature. By making it more stable, it has a longer shelf life, and it also stays solid rather than turning into a liquid. This is ideal for industrial processes because a steady supply of oils can be held in the process due to the longevity of the oils and their tolerance for traveling long distances and sitting in inventory.
The problem with hydrogenation is that it produces transfats as a byproduct. These manufactured transfats enter your system and become part of your body's makeup, just as do other fats -- your internal tissues become partially composed of a manufactured product. They also raise bad cholesterol in your system and lower good cholesterol, theoretically raising your risk of heart disease (although, as I understand it, there's some chicken-and-egg discussion to be had about this -- does the presence of leading heart disease indicators themselves raise cholesterol levels in order to repair artery damage? Cholesterol, after all, is a tissue-repairing substance produced naturally by the body and will exist in larger quantities when there are tissues in the body in need of repair).
So, the trend nowadays is to shift away from transfats. Obviously, not a bad idea. But, what do we shift to? We shift to the next unknown substance whose problems will be revealed after a generation of use until their own problems become trendy things to avoid.
In the USA, for example, KFC is planning to substitute soybean oil for hydrogenated oils. Soybean oil is a polyunsaturated fat that is not heat stable. During heating, carcinogenic compounds form in the oil. Polyunsaturated oils also oxidize and go rancid easily. Neither are good for your health, but these problems don't come to the forefront until we expose a large audience to them.
In Canada, KFC is planning to use canola oil as the substitute. As a monounsaturated oil, this is probably not as bad as using soybean oil. But, what do we know about canola oil? It hasn't been used for very long, and it comes from a plant that is toxic to humans unless it is bred to remove the toxic substance. So, we remove the short-term toxicity, but what about the possibility of long-term toxicity? The answer is: we don't know.
The restaurants say that it's challenging to find an affordable alternative to hydrogenated oils. This is true. But, what price do you want to pay for your health? Here are some alternatives: palm oil, coconut oil, beef fat, and lard. Unfortunately, we've been tricked into thinking that these are bad for us because of their saturated fat content. As part of a healthy diet, they're not harmful. And, actually, your body needs saturated fats just as much as it needs other fats. Because the balance of fats in our diets has generally shifted so far over into those sourced from vegetable oils, we are probably now overloaded on vegetable oils, leading to the omega6 : omega3 imbalance that such a shift produces. Restoring the balance through the use of animal fats would not be a bad thing. The vegetarians can eat salad.
In the end, I believe that the only real answer to these problems is to shun processed food. When you eat processed food, you can be fairly sure that each individual ingredient in the product was also processed to some degree in order to make it suitable for an industrial process. You're eating a product made up of products, none of them resembling their natural form.
So, although the following suggestions aren't bulletproof, in most cases you're better off eating things that do actually go bad in short order, but eat them before they go bad. And, you're better off shopping from the shelves bordering the supermarket rather than those in the aisles in the middle. I doubt there's anything we'll be able to do in the space of our lifetime, regardless of how old you are, to produce a healthy processed food product.
You can't exercise your way out of these problems. Question anything that comes in a package. Learn about different types of oils and their uses. Learn how to cook. Re-learn to appreciate the taste of real food unmasked by artificial enhancers and sauces, or make your own sauces. It'll pay off in the long run, because any time saved today by ignoring advice like this will probably be taken back from you at a later date.
Technorati: industrial food, KFC, health, food, nutrition, transfat