Eat Fat to Burn Fat

Fats from whole food, natural sources like
avocados and nuts offer a powerful health boost.

For a long time, we thought avocadoes were good for nothing but ready-made guac and a decent burger every now and then. But these little nutritional hand grenades were having an explosive impact on our diets for all that time. How so? They’re infused with a key nutrient for maintaining healthy weight: fat. 

Wait…fat can help us maintain our weight? Fat doesn’t make us fat? In a word: exactly.

Fat is not something to avoid. For starters, it’s essential for normal growth and development. Dietary fat also provides energy, protects our organs, maintains cell membranes, and helps the body absorb and process nutrients. Even better, it helps the body burn fat, says nutritionist and owner of Nutritious Life meal system, Keri Glassman, RD, who recommends that about a third of any weight-loss plan’s calories come from dietary fat. 

Before you grab a deep-fried hot dog, consider this: not all fatty foods are created equal. The foods you choose can mean the difference between a trim body and one plagued with obesity and disease, Glassman says. While a diet of stereotypically fatty foods like pizza, French fries, and hamburgers can contribute to weight gain and deterioration of health, the dietetic community is learning that the overall nutritional content of these foods—not their saturated fat—is what’s to blame. Sure, research from 50 years ago found that saturated fatty acids, a type of fat that’s “saturated” with hydrogen and typically solid at room temperature, raised LDL (bad) cholesterol levels. 

But a reevaluation of that research has shown that they raise HDL (good) cholesterol just as much, if not more, protecting the body from unhealthy cholesterol levels and heart disease, says nutritionist and national spokesperson for the American Dietetic Association Tara Gidus, RD. “Instead of making any one thing in the diet a villain, we need to look at total caloric content as well as quality of food, what are we eating that is ‘good’ and helping our body’s immune system and cells to stay healthy.” 

Most of the fat that you eat—especially if you want to lose weight—should come from unsaturated sources, both monounsaturated (MUFA) and polyunsaturated (PUFA), Glassman says. Why? These good-for-you foods (like fish, seeds, nuts, leafy vegetables, olive oil, and, of course, avocadoes) pack tons of nutrients. Besides removing LDL cholesterol from arteries and promoting a healthier heart, unsaturated fat can help you burn fat big time without cutting calories. A 2009 study in the British Journal of Nutrition, found that participants who consumed the most unsaturated fatty acids have lower body mass indexes and less abdominal fat than those who consumed the least. Why? The unsaturated folks ate higher-quality foods. 

Not long ago, the low-fat/no-fat diet craze swept across the food landscape. Manufacturers marketed low-fat and no-fat everything, and consumers responded by chowing down. It’s healthy, right? Wrong. All wrong. Besides stripping our bodies of a much-needed nutrient, low- and no-fat diet movements have increased obesity rates. Why? It turns out that fat provides a big component to the foods we love: Taste. When food manufacturers removed fat from their foods, they had to load the foods with sugar and salt, which are nutrient-free, to increase flavour. For example, the second most prevalent ingredient Kraft Fat-Free Catalina salad dressing, for instance, is high fructose corn syrup, packing 7g of sugar per serving. And just one ounce of the saucy stuff packs 350mg of sodium—that’s 15% of your recommended daily value—and who eats just one “serving,” anyway?

What to eat – and what to skip – when adding fat to your diet

• Unsaturated Fatty Acids: Consisting of both monounsaturated fatty acids (MUFAs) and polyunsaturated fatty acids (PUFAs), they are important for health. MUFAs are found in vegetable oils, nuts, seeds, olives, and avocadoes, while PUFAs are found in vegetable oils, fish, and seafood. Omega-3 and omega-6 fatty acids are two PUFAs that can only be obtained through diet and are called “essential fatty acids.” Adjust your diet accordingly.
• Saturated Fatty Acids: Found primarily in foods from animal sources such as meat and dairy products, like butter and cheese, they are usually solid at room temperature. Some vegetable oils such as coconut, palm kernel, and palm oil also contain saturated fat. Eat limited amounts as part of a healthy diet – and always try to consume healthier sources. For example, grass fed beef is a much better option than, say, popcorn popped in oil.
• Trans Fatty Acids: Chemically processed vegetable oils, they are semisolid at room temperature and are used in some margarines, fried foods, and processed foods to enhance flavour, texture, and shelf life. Also called “partially hydrogenated” oils, they should be avoided like the plague they are.

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