Omega 3's in health and disease
What is the easiest thing you can do to improve your health?
Take an omega 3 supplement. There is an avalanche of information in the medical literature in the past few years that supports the value of omega 3's in the prevention of heart disease, cancer, inflammation, pain, depression and more.
This article will explain some of the chemistry of omega 3's and omega 6's, provide an overview of the current research studies in major medical journals on omega 3's, explain what dose you might need and what are the best sources of omega 3's available today.
There are different kinds of fats. Saturated fats are solid at room temperature. For example, animal fats in meat are saturated fats. You should limit the amount of saturated fat in your diet but there may be bigger "fat villains" than saturated fat. Monounsaturated fat such as the fat in olive oil is liquid at room temperature but cloudy in the refrigerator. Your salad dressing should contain extra virgin olive oil. Polyunsaturated fats are liquid in the refrigerator. They have more "double bonds" which are the chemical structures that make them flexible and fluid. Trans fats are artificial chemically produced fats such as margarine or "partially hydrogenated" fats. These fats are harmful to your health and should not be consumed.
Polyunsaturated fats come in omega 3 and omega 6 varieties. Both are essential fats. That means that we cannot produce them in our bodies and like vitamins, we cannot live without them. The term omega 3 refers to the position of the double bond in the chemical structure of the fat. This determines the three-dimensional structure of the fat and how it reacts with receptors. Omega 3's come in short chain varieties in plants such as flaxseed and long chain varieties from fish oil. We need the long chain omega 3's from fish oil for optimal health. We cannot adequately convert the short chain omega 3's to long chain in our bodies. So flaxseed oil won't do it, we need fish oil.
Omega 3's are contained in cold water fish such as salmon and mackerel. Unfortunately the milder fish like halibut don't contain very much omega 3. You could get adequate doses from eating salmon every day but that might lead to too much of the contaminants that unfortunately are in fish especially larger predatory fish at the top of the food chain. It great to eat fish but to get the larger doses of omega 3's that are necessary, you need an omega 3 supplement that is refined so the mercury and PCB's that are in fish are eliminated.
You need long chain omega 3's. The other side of the equation is to limit your intake of omega 6's. Both are essential, but we are overloaded with omega 6's today. Our Paleolithic ancestors consumed about equal amounts of omega 3's and omega 6's. We have not changed our genome since our Paleolithic evolution and we were "designed" to function most efficiently and have maximal health on a Paleolithic style diet. The current American diet has a ratio of omega 6 to omega 3 of up to 20 to 1. To improve and maintain health, we need to increase our long chain omega 3's with fish oil and decrease omega 6's. Omega 6's are found in corn oil and seed oils such as safflower, cottonseed and soy. These fats were introduced as "heart healthy" since they are not saturated and do not contain cholesterol. This reminds me of the joke about starting medical school. "Half of what we are going to teach you is wrong, we just don't know which half." Omega 6's are in the wrong half. Of course you need some Omega 6's to live but since we are flooded with them in our culture, you should consider omega 6's the most harmful fat and avoid them when you can.
So why do you need omega 3's? Omega 3's are the building block of the favorable eiconsansoid hormones. These hormones are made by every cell in the body and are paired with a favorable and an unfavorable hormone. The long chain omega 3's are the building blocks of the good eiconsansoids. The table below shows how good and bad eicosinoids are paired.





LinkBack URL
About LinkBacks
Svar med sitat
