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What are saturated fats? Are they really harmful?
Both ways are essential if we want to truly understand what are saturated fats - why they are widely regarded as harmful and why they are, in fact, good for health! I will try to explain both ways simply. In chemistry, we learn that saturated fats have no double bonds and are "saturated" with hydrogen atoms. It means the fats molecules cannot form chemical reactions whereby they take on more hydrogen atoms. In turn, this means that saturated fats are stable. They do not easily undergo chemical reactions; they don't spoil - or turn rancid - easily. They do not form toxic by products. And this is a very good thing. It means that saturated fats are very suitable for cooking. Even under conditions of high heat, they remain stable. Saturated fats are very suitable for high heat cooking, such as deep frying. The layman's explanation of what are saturated fats is a lot easier to understand - saturated fats are fats that turn solid at room temperature. Butter is a good example. At room temperature, depending on whether you live in a cool or hot climate, butter is either solid or semi-solid. When you put it in the refrigerator, it hardens further. When you heat it up, it turns liquid. But whether it is solid or liquid, the chemical structure of butter remains unchanged - just as the chemical structure of water remains unchanged whether it is in the form of ice, water or steam.
Worse of all, this idea gives rise to another answer as to what are saturated fats. To most people, saturated fats are simply "bad fats". They are harmful fats. They should be avoided. But remember, this is only an idea. In scientific language, it is called a theory. This idea has become so widely accepted that most people take for granted that it is true. If you look deeper into this idea or theory, however, you will find that it is not supported by scientific facts. Some important scientific facts to note are as follows:
But hadn't it been scientifically proven that saturated fats cause heart disease? Not really. The "proof" that is widely cited is the "Seven Countries Study" as well as earlier studies by Dr Ancel Keys. In these studies, Dr Ancel Keys showed that countries where people consumed the largest amounts of saturated fats had the highest rates of heart disease. It seems convincing, but... Dr Ancel Keys had actually collected data from more than seven countries. And when the entire data is examined, you will find that there are also countries where people ate plenty of saturated fats and had low rates of heart disease. It seemed that Dr Ancel Keys "cherry picked" only the data that supported his theory, and quietly left out the rest!
This idea was further entrenched in the 1980s, this time not by doctors or scientists, but by US producers of vegetable oils. They used this idea to wage a massive campaign against saturated fats so that people would swtich over to polyunsaturated oils such as corn oil and soybean oil. And so, if today you ask what are saturated fats, people would say, "bad, bad, bad fats". Click here for Part II of this article, to learn more about what are saturated fats good for. And click here to learn more about the causes of coronary heart disease. |
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