| Fats |
Your immune system is extremely complicated, but is highly efficient in providing multiple defenses as your body’s tissues and cells work together to resist and defend against unwanted bacteria intrusions, infections and diseases. To achieve optimal health and maintain a strong immune system, you need the right diet, exercise and minimal stress. Too much fat, or the wrong kind of fat, can affect the ability of your white blood cells to multiply – produce antibodies – and fight off infection. There are many kinds of fat. It is almost impossible to have a meal without fat, and though some fats are good for you, other fats are not. These bad fats can be terrible for your immune system, contribute to increasing your high cholesterol and high blood pressure, and harming your heart. Our bodies need fat for the following reasons:
- They provide essential fatty acids and can act as a nutrient
- Fats are a concentrated energy source in foods
- Fats transport fat-soluble vitamins A, D, E and K, along with some phytochemicals
- Fats contribute to taste and smell in foods
- Fats can stimulate our appetite
- Fats contribute to the feelings of satisfaction, contentment and fullness
- Fats make foods softer or tender
Too much fat, or the wrong kind of fat, is not a good thing. Olive oil is probably one of the best oils to consume if you are trying to maintain or enhance your immune system.
Bad Fats:
Saturated Fat
Saturated fat is derived from animal fat, coconut oil, cocoa butter and palm kernel oil. Palm oil is the worst kind of fat for you. Saturated fat raises your bad cholesterol more than anything you could possibly eat. If you want to reduce your bad cholesterol and lower your blood pressure, stop eating, or reduce your intake of, saturated fat.
Trans Fats, Hydrogenated Fats, or Fatty Acids
Trans fatty acids are fats produced by heating liquid vegetable oils in the presence of hydrogen. This process is known as hydrogenation. The more hydrogenated an oil is, the harder it will be at room temperature. For example, spreadable margarine in a tub is less hydrogenated and therefore has fewer trans fats than a stick of margarine.
Most of the trans fats are found in refined foods, prepared baked goods, margarines, snack foods and processed foods – none of which is good for high blood pressure. Fried foods, like french fries and onion rings, also contain a good amount of trans fat.
Trans fats also spark inflammation and an over-activity of the immune system that has been apparent in heart disease, stroke, diabetes and other chronic conditions. While you should limit your intake of saturated fats, it is important to eliminate trans fats from partially hydrogenated oils in your diet.
Good Fats:
Polyunsaturated fats
Unsaturated fats are found in products derived from plant sources, such as vegetable oils (corn, soybean, olive), nuts and seeds (sesame, sunflower). There are two main categories: polyunsaturated fats, which are found in high concentrations in sunflower, corn and soybean oils, and monounsaturated fats, which are found in high concentrations in canola, peanut and olive oils. In studies in which polyunsaturated and monounsaturated fats were eaten and carbohydrates were eliminated, these good fats decreased bad cholesterol and increased good cholesterol. Use only unrefined cold- or expeller-pressed oils – oils that have never been heated above 110F during processing. Another type of polyunsaturated fat is found in fish, which is often referred to as fish oil or omega-3 fatty acids. Nut oils are good sources of omega-3 fatty acids too, along with vitamin E. Walnut oil is highest in omega-3s, but be cautious, because nut oils contain saturated as well as unsaturated fats.
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| melsQuiz answer |
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| melsBuzz |
- Be aware of how much fat you are consuming. Fats added to foods, for example a little dessert topping, a spread of butter on bread, or a tablespoon of sour cream on a baked potato, are the major source of fat in your diet. Unsaturated fats, when substituted for saturated fats, help lower bad cholesterol
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| melsAdvice |
- Switch from a fat-rich lunch to a protein- or carbohydrate-rich lunch. One gram of fat equals 9 calories, while 1 gram of protein or carbohydrate equals 4 calories. Think of it in a different way: by eating less refined foods and more whole foods, you get to eat more food and take in less calories.
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| DidYouKnow? |
- Read labels. Polyunsaturated fats are found in most commercially prepared salad dressings
- Try using nut oils in homemade salad dressing or in cooking. When cooking with nut oils, remember that they respond differently to heat than do vegetable oils. Nut oil, if overheated, can become bitter. Just like with nuts, use nut oil in moderation to restrict overall calorie and fat intake.
- Cholesterol is not a fat. You can find cholesterol in both high-fat and low-fat animal foods, so even if a food is low in fat, it may be high in cholesterol. For example, organ meats like liver are low in fat, but high in cholesterol
- Fats melt at different temperatures. The more unsaturated a fat, the more liquid it is at room temperature. Conversely, the more saturated a fat, the longer it takes to melt
- Vegetable oils become more saturated when they are hydrogenated. The reasons why companies like hydrogenated oils is because hydrogenation improves an oil’s shelf life and increases its smoking point
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| melsTips |
- Avoid fried foods, margarine, animal fat and any trans fat
- Discover the invisible fats in foods – read labels
- If you must eat meat, trim its fat before cooking
- Buy fat-free dairy products
- Eat more fish
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| melsQuiz |
- How many types of fatty acids are there?
- Which tropical oil contains more saturated fat than beef fat?
- True or false? When your body is low on fuel, it draws on its stored fat for energy.
- Though most margarines are unsaturated, what is the reason you want to avoid them when it comes to your immune system?
- What is the maximum number of fat grams one should consume in a 2,500-calorie diet per day?
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| melsQuiz Answers |
- 3 �saturated, monounsaturated and polyunsaturated
- Coconut oil
- True
- 10%
- 25 grams
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