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by Vesanto Melina MS, RD
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Sunflower
seeds
provide vitamin E and
trace minerals such as zinc |
February is heart month. Whereas past research focused on the amount of
dietary fat as a trigger for cardiovascular disease, we now know that
both quantity and quality of fat impact our blood vessels. Here are six
steps to take to make the fat in your diet work for you instead of
against you. (This
section is by my esteemed co-author and fats and oils expert, Brenda
Davis, and from our
book The New Becoming Vegetarian, and in Canada, Becoming Vegetarian.)
Step 1. Get 15 to 30 percent of your calories from fat.
If you are inactive, overweight or have chronic disease, aim for the
lower end of this range. People who are lean and active
can aim for the higher end of this
range, and children
higher, such as 35%. By 15 to 30 percent of
calories, how much fat do we mean? For someone eating 2,000 calories,
this means two and a half to five tablespoons of fat. Good sources are
whole plant foods such as those listed below. Note that nuts and seeds
are not linked with obesity, unlike concentrated fats and oils and
high-fat animal products. Each of the following provides about one
tablespoon of fat:
- 1/4 cup nuts or seeds
- 1/2 avocado
- 20 olives
- 1 cup medium tofu
- 1/2 cup firm tofu or tempeh
- 2 cups regular soymilk
- 1/2 cup shredded coconut
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one tablespoon of fat or oil is entirely fat
Step 2. Minimize, better still
eliminate, your
intake of
trans fats.
Trans fatty acids should make up less than one percent of your calories;
an intake of zero is better still. Accomplish this by restricting or
eliminating foods containing hydrogenated or partially hydrogenated
fats: cookies, crackers, pastries, pies, snack foods, hydrogenated
margarine, shortening and most fried foods. Don't be fooled by a label
declaration of "All-vegetable oil." Read the ingredient list. Dairy
products also contain trans fats.
Step 3. Limit saturated fats.
Restrict saturated fats to seven percent of calories or less; avoid the
heavy hitters, such as butter, cheese, eggs, fatty animal products and
tropical oils.
If you use dairy, replace whole milk and sour cream with skim milk and
non-fat yogurt. Spread your toast with nutritious almond or cashew
butter. For breakfast, try scrambled tofu. In baking, substitute ground
flaxseed for eggs.
Step 4. Keep your intake of omega-6 fatty acids moderate.
Humans require some dietary omega-6 fatty acids; excellent sources are
sunflower, pumpkin and sesame seeds. Along with valuable fats, seeds
deliver minerals (zinc and copper) plus vitamin E. Most Canadians
consume too many omega-6s because these are plentiful in a great many
foods and in the oils (corn, safflower, sunflower, soy, cottonseed) used
in processed foods. Such oils do provide omega-6s, but without the other
beneficial nutrients found in whole foods.
Step 5. Select reliable sources of omega-3 fatty acids.
The other fats that we need are omega-3 fatty acids; these are present
in far fewer foods. We require three to six grams of omega-3 fatty acids
per day. Excellent sources are flaxseed, flaxseed oil, hempseeds,
hempseed oil, canola oil and walnuts. Each of the following provides
three grams of omega-3 fatty acids:
- 1 tsp flaxseed oil
- 1 tbsp hempseed oil
- 2 tbsp ground flaxseed
- 2 tbsp canola oil
- 1/4 cup walnuts
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A few other foods also contribute to our intake: we get one gram of
omega-3 fatty acids from 10 cups of dark leafy greens, one cup of
soybeans, or six ounces of firm tofu. Fish provide long-chain omega-3
fatty acids (DHA), however, serious environmental, health, and animal
rights issues make this choice less than ideal. However, fish get their
omega-3s from micro-algae and we can get this DHA in veggie caps
(do a web search for "vegan DHA"). When using these supplements, 100-300 mg of
DHA per day is generally recommended (with the higher end of the range
suitable for
pregnant and lactating women).
Step 6. Rely on whole plant foods as fat sources.
The highest quality fat comes from fresh whole foods such as nuts,
seeds, olives, avocados and soy foods. Wherever possible, rely on these
instead of concentrated fats and oils for most of your fat. Whole foods
come carefully packaged by nature to protect them from damaging light,
heat and air. Whole plant foods provide powerfully protective phytochemicals, including
antioxidants, plant sterols, vitamins and minerals and are the very best
sources of essential fatty acids.
Vesanto Melina is the author of eight food and nutrition classics.
Her has included the opportunity to take part as dietitian in Dr.
Dean Ornish's renowned heart disease reversal retreat program. Her
website is: www.nutrispeak.com |