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The Good, the Bad, and the Ugly Fat
Health Alert 152
You know conventional advice tells you to reduce the fat in your diet. A minority
of doctors including myself have been telling the contrary. Following that advice
will lead you on a wild goose chase. It will dull your thinking, make you tired
and rob your skin, eyes and hair of their healthy luster.
You need fat and should not avoid it. However, the modern world has changed
the character of fat - there's the rub. You have to take action to consume
the right kind of fat.
In this letter you'll learn which fats you need and how to get them.
And, which fats you should avoid altogether. I'll also give you a fat-laden
recipe that will boost your good fat intake for a healthier heart and brain.
* Not all Fat Is Created Equal *
I divide dietary fat into 3 groups: omega-3, omega-6, and trans fats. They
are the good, the bad, and the ugly of this macronutrient. The first two have
their place in your diet.
You need omega-3 and omega 6 fatty acids for good health. You
cannot make enough so you must include them in your diet. You need them to build
and maintain brain tissue. They are vital structural components of cell membranes.
And, you use them to make a variety of hormones known as prostaglandins. Both
their amount and ratio in the diet have important
physiological impacts on your health.1
? The Good Fat: Omega-3s
Good sources of omega-3s are salmon, avocado, walnuts, olives, and olive oil.
Omega-3s, and particularly EPA and DHA, do appear to reduce the risk of dying
from Cardiovascular Disease (CVD) and other diseases.
In your modern world the ratio of omega-6 to omega-3 has changed to about 20
to 1. All evidence concurs that we evolved on a diet with a much lower ratio
of omega-6 to omega-3s.2 In societies still living as hunter-gatherers, the
ratio is about 2 to 1. In other words, we eat too little of the 3 variety and
too much of the 6 variety.
? The Bad Fat: Omega-6s
Omega's 6s are in animal and plant foods. Although omega-6s are essential
to a balanced diet, you only need a modest amount. Too much can cause heart
disease, diabetes, obesity, fatigue, inability to concentrate, and memory loss.
Trans fats are different all together. They are a creation of the modern food
industry for their convenience. They are the ugly fat that has no place in your
diet.
? The Ugly Fat: Trans Fats
Trans fats lurk in low fat cookies, cakes, cereal, chips, crackers, and fried
fast-food like French fries and chicken nuggets. High intakes of trans-fatty
acids interfere with the conversion of ALA to EPA and DHA.3 This is the worst
fat you can possibly eat. Avoid it completely.
Native Inuit Americans have a low risk of heart disease despite a diet high
in fat and cholesterol. Interest in heart disease protection with omega-3s began
with studies of the Inuit. Since the 1970s, the benefits of dietary omega-3s
continue to expand.3 Omega 3s reduce the risk of dying from heart disease because
they4-7:
? lower blood pressure.
? improve blood lipids.
? decrease serum TG and VLDL-C levels, often by 30% or more.
? lower fasting serum TG.
? reduce the production of VLDL.
Here is a meal loaded with Omega-3 fats. It's one of my favorite recipes
from my The Heart Cure book coming this summer.
Dr. Sears' Baked Alaskan Salmon Salad
Ingredients:
1 bag of spring mixed greens ½ cup of sliced mushrooms
1 small red onion chopped 1 avocado peeled and chopped
¾ cup of chopped walnuts 1 cup of crumbled goat cheese
1 lemon and 1 lime Black pepper
Fresh basil 2 lbs of Alaskan salmon (1/2 lb. per person)
Dressing
2 tablespoons of cold pressed olive oil 2 tablespoons of balsamic vinegar
2 tablespoons of water 1 tablespoon of apple cider vinegar
½ teaspoon of honey ½ teaspoon of honey
½ teaspoon of gourmet mustard Black Pepper and Basil to taste
Directions:
In large bowl, add salad dressing ingredients and whisk. Add onion
and mushrooms. Put aside.
Drizzle olive oil in a glass baking dish. Place fish in skin down. Squeeze
lemon and lime over fish. Season with basil, black pepper, and red pepper flakes
to taste. Add a 1/3 cup of burgundy wine. Bake at 350 degrees for 20 to 30 minutes.
Mix in salad greens and toss to distribute dressing. Add avocado, walnuts and
toss again. Serve greens on plate, top with fish and goat cheese. Garnish with
lemon and lime.
Al Sears, M.D.
1. Eaton SB, Eaton III, SB, Konner MJ. Palaeolithic nutrition revisited: A
twelve-year retrospective on its nature and implications. Eur J Clin Nutr 1997;51:207-16.
2. FAO/WHO Expert Committee. Fats and oils in human nutrition. Food and Nutrition
Paper No. 57. FOA, Rome, Italy. 1994.
3. Bang HO, Dyerberg J, Horne N. The composition of food consumed by Greenland
Eskimos. Acta Med Scand 1976; 200:69-73.
4. Bang HO, Dyerberg J, Horne N. The composition of food consumed by Greenland
Eskimos. Acta Med Scand 1976;200:69-73
5. Morris MC, Saks F, Rosner B. Does fish oil lower blood pressure? Circulation
1993; 88: 523-33.
6. Mori TA, et al. Docosahexanoic acid but not eicosapentanoic acid lowers ambulatory
blood pressure and heart rate in humans. Hypertension 1999; 34: 253-60.
7. Nestel PJ, Connor WE, Reardon MF, et al. Suppression by diets rich in fish
oil of very low-density lipoprotein production in man. J Clin Invest 1984; 74:
82-9.
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