Dietary Fats – Key to Health and Longevity
Dietary fats play a crucial role in our health and longevity. And yet, there is perhaps no other health topic more clouded in confusion and misinformation.
In the early 1950′s, scientists found that plaque (the substance which clogs the arteries and is a major cause of heart disease and stroke) is partially composed of cholesterol. Based on this discovery, they assumed a direct relationship between the amount of cholesterol in our diet and the formation of plaque in the arteries. Since that time, a number of studies have cast serious doubt on this conclusion. We now know that the build-up of plaque in the arteries is a much more complex process, involving inflammation as well as a number of dietary and hereditary factors. But most important, it is now apparent that the most dangerous dietary factor is not cholesterol, as once believed, but trans-fatty acids or trans fat.
Trans fat is formed when vegetable oils are hydrogenated (hardened) into margarine or shortening. Trans fat is in most fried foods such as french fries, fried chicken, doughnuts, cookies, pastries and crackers. Other processed foods also contain trans fat, often labeled as shortening, hydrogenated or partially hydrogenated oil. Trans fat is associated with increased blood levels of low density lipoprotein (LDL), or “bad” cholesterol, and low levels of high density lipoprotein (HDL), or “good” cholesterol. Trans fat is a major contributor to the formation of plaque in the arteries and the resulting increase in heart disease, stroke and a number of other serious degenerative diseases.
Another related dietary problem is an unhealthy ratio of essential fatty acids. Both Omega-6 and Omega-3 fatty acids are essential for our health. The ideal ratio of Omega-6 to Omega-3 in our diet is from 1/1 to 2/1. Essential fatty acid ratios in this range are found in native populations whose dietary fat comes from legumes, grains, nuts, seeds, green vegetables, fish and animal sources. However, the typical American diet, with large amounts of polyunsaturated fats, has a ratio of 20/1, or even higher.
Omega-3 oils include a group of chemical nutrients which help to thin the blood, lower blood pressure, reduce inflammation, protect against heart attack and stroke, regulate the immune system and nourish the brain, just to name a few of their remarkable health benefits. Omega-3 is particularly important in early brain development and learning ability in children. In Europe, Omega-3 supplements are replacing conventional anti-depressant therapy for mild to moderate depression and ADHD. By increasing our intake of Omega-3 fatty acids, we can enjoy many long-term health benefits.
The subject of dietary fats is complex and includes more bio-chemistry than most people want to know. As a simple rule, keep in mind that monosaturated oils, like virgin olive oil, is the preferred dietary staple, supplemented with fish and seed oils to provide a healthy ratio of essential fatty acids. The following guidelines are suitable for most (*) people to insure the right kinds and amounts of dietary fats.
1) 2 grams of combined Omega-3 from high grade fish or krill oil, per day. For most brands of fish oil, this represents 1 to 2 teaspoons or 5 to 10 capsules per day. Nordic Naturals or Carlson’s are both excellent brands.
2) Avoid trans fats, fried foods or foods that contain margarine, hydrogenated oils or shortening. For baking or high heat cooking, it would be better to use butter or virgin coconut oil.
3) For meat consumption, favor deep ocean fin fish and organically raised chicken.
4) Use organic virgin olive oil for cooking or to garnish bread, vegetables and salads.
5) Unless you are overweight or have high cholesterol, a small amount of butter, ghee or virgin coconut oil is fine. For many people, 1/2 teaspoon of these fats every day is a valuable and welcomed addition to the diet.
6) 20 minutes of moderate to vigorous exercise, at least 5 times per week. If you are not accustomed to regular exercise, begin slowly and work up to 20 minutes gradually over several weeks.
* Precautions: Fish oil has natural blood thinning factors. If you are pregnant, currently taking blood thinning medication, have diabetes or a bleeding disorder, consult with your health care professional before adding fish oil to your diet.
Thank you for visiting my blog. If you have questions about acupuncture and shiatsu, or if you have a specific health concern, please contact me at:
Bart Walton, L.Ac.
Licensed Acupuncture & Shiatsu
Portland, Oregon
503/939-5805

