DIET MYTHS
Myth: High-protein/low-carbohydrate diets are a healthy way to lose weight.
Fact:The long-term health effects of a high-protein/low-carbohydrate diet are unknown. But getting most of your daily calories from high-protein foods like meat, eggs, and cheese is not a balanced eating plan. You may be eating too much fat and cholesterol, which may raise heart disease risk. You may be eating too few fruits, vegetables, and whole grains, which may lead to constipation due to lack of dietary fiber. Following a high-protein/low-carbohydrate diet may also make you feel nauseous, tired, and weak.
Eating fewer than 130 grams of carbohydrate a day can lead to the buildup of ketones (partially broken-down fats) in your blood. A buildup of ketones in your blood (called ketosis) can cause your body to produce high levels of uric acid, which is a risk factor for gout (a painful swelling of the joints) and kidney stones. Ketosis may be especially risky for pregnant women and people with diabetes or kidney disease.
Tip:High-protein/low-carbohydrate diets are often low in calories because food choices are strictly limited, so they may cause short-term weight loss. But a reduced-calorie eating plan that includes recommended amounts of carbohydrate, protein, and fat will also allow you to lose weight. By following a balanced eating plan, you will not have to stop eating whole classes of foods, such as whole grains, fruits, and vegetables— and miss the key nutrients they contain. You may also find it easier to stick with a diet or eating plan that includes a greater variety of foods.
Myth: Starches are fattening and should be limited when trying to lose weight.
Fact: Many foods high in starch, like bread, rice, pasta, cereals, beans, fruits, and some vegetables (like potatoes and yams) are low in fat and calories. They become high in fat and calories when eaten in large portion sizes or when covered with high-fat toppings like butter, sour cream, or mayonnaise. Foods high in starch (also called complex carbohydrates) are an important source of energy for your body.
Tip:A healthy eating plan is one that:
- Emphasizes fruits, vegetables, whole grains, and fat-free or low-fat milk and milk products.
- Includes lean meats, poultry, fish, beans, eggs, and nuts.
- Is low in saturated fats, trans fat, cholesterol, salt (sodium), and added sugars.
Myth:Certain foods, like grapefruit, celery, or cabbage soup, can burn fat and make you lose weight.
Fact:No foods can burn fat. Some foods with caffeine may speed up your metabolism (the way your body uses energy, or calories) for a short time, but they do not cause weight loss.
Myth:Natural or herbal weight-loss products are safe and effective.
Fact:A weight-loss product that claims to be “natural” or “herbal” is not necessarily safe. These products are not usually scientifically tested to prove that they are safe or that they work. For example, herbal products containing ephedra (now banned by the U.S. Government) have caused serious health problems and even death. Newer products that claim to be ephedra-free are not necessarily danger-free, because they may contain ingredients similar to ephedra.
Tip: Talk with your health care provider before using any weight-loss product. Some natural or herbal weight-loss products can be harmful.
Meal Myths
Myth: “I can lose weight while eating whatever I want.”
Fact: To lose weight, you need to use more calories than you eat. It is possible to eat any kind of food you want and lose weight. You need to limit the number of calories you eat every day and/or increase your daily physical activity. Portion control is the key. Try eating smaller amounts of food and choosing foods that are low in calories.
Tip:When trying to lose weight, you can still eat your favorite foods—as long as you pay attention to the total number of calories that you eat.
Myth: Low-fat or fat-free means no calories.
Fact: A low-fat or fat-free food is often lower in calories than the same size portion of the full-fat product. But many processed low-fat or fat-free foods have just as many calories as the full-fat version of the same food—or even more calories. They may contain added sugar, flour, or starch thickeners to improve flavor and texture after fat is removed. These ingredients add calories.
Tip: Read the Nutrition Facts on a food package to find out how many calories are in a serving. Check the serving size too—it may be less than you are used to eating.
Myth: Fast foods are always an unhealthy choice and you should not eat them when dieting.
Fact: Fast foods can be part of a healthy weight-loss program with a little bit of know-how.
Tip: Avoid super-size combo meals, or split one with a friend. Sip on water or fat-free milk instead of soda. Choose salads and grilled foods, like a grilled chicken breast sandwich or small hamburger. Try a “fresco” taco (with salsa instead of cheese or sauce) at taco stands. Fried foods, like french fries and fried chicken, are high in fat and calories, so order them only once in a while, order a small portion, or split an order with a friend. Also, use only small amounts of high-fat, high-calorie toppings, like regular mayonnaise, salad dressings, bacon and cheese.
Myth: Skipping meals is a good way to lose weight.
Fact: Studies show that people who skip breakfast and eat fewer times during the day tend to be heavier than people who eat a healthy breakfast and eat four or five times a day. This may be because people who skip meals tend to feel hungrier later on, and eat more than they normally would. It may also be that eating many small meals throughout the day helps people control their appetites.
Tip: Eat small meals throughout the day that include a variety of healthy, low-fat, low-calorie foods.
Myth: Eating after 8 p.m. causes weight gain.
Fact: It does not matter what time of day you eat. It is what and how much you eat and how much physical activity you do during the whole day that determines whether you gain, lose, or maintain your weight. No matter when you eat, your body will store extra calories as fat.
Tip: If you want to have a snack before bedtime, think first about how many calories you have eaten that day. And try to avoid snacking in front of the TV at night—it may be easier to overeat when you are distracted by the television.
Food Myths
Myth: Nuts are fattening and you should not eat them if you want to lose weight.
Fact: In small amounts, nuts can be part of a healthy weight-loss program. Nuts are high in calories and fat. However, most nuts contain healthy fats that do not clog arteries. Nuts are also good sources of protein, dietary fiber, and minerals including magnesium and copper.
Tip: Enjoy small portions of nuts. One-half ounce of mixed nuts has about 270 calories.
Myth: Eating red meat is bad for your health and makes it harder to lose weight.
Fact: Eating lean meat in small amounts can be part of a healthy weight-loss plan. Red meat, chicken, and fish contain some cholesterol and saturated fat (the least healthy kind of fat). They also contain healthy nutrients like protein, iron, and zinc.
Tip: Choose cuts of meat that are lower in fat and trim all visible fat. Lower fat meats include beef round steak, tenderloin, sirloin tip, flank steak, and extra lean ground beef. Also, pay attention to portion size. Three ounces of meat or poultry is the size of a deck of cards.
Myth: Dairy products are fattening and unhealthy.
Fact: Low-fat and fat-free milk, yogurt, and cheese are just as nutritious as whole milk dairy products, but they are lower in fat and calories. Dairy products have many nutrients your body needs. They offer protein to build muscles and help organs work properly, and calcium to strengthen bones. Most milks and some yogurts are fortified with vitamin D to help your body use calcium.
Tip: Consuming 3 cups per day of fat-free/low-fat milk or equivalent milk products is recommended.
Myth: “Going vegetarian” means you are sure to lose weight and be healthier.
Fact: Research shows that people who follow a vegetarian eating plan, on average, eat fewer calories and less fat than nonvegetarians. They also tend to have lower body weights relative to their heights than nonvegetarians. Choosing a vegetarian eating plan with a low fat content may be helpful for weight loss. But vegetarians—like nonvegetarians—can make food choices that contribute to weight gain, like eating large amounts of high-fat, high-calorie foods or foods with little or no nutritional value.
Vegetarian diets should be as carefully planned as nonvegetarian diets to make sure they are balanced. Nutrients that nonvegetarians normally get from animal products, but that are not always found in a vegetarian eating plan, are iron, calcium, vitamin D, vitamin B12, zinc, and protein.
Tip: Choose a vegetarian eating plan that is low in fat and that provides all of the nutrients your body needs. Food and beverage sources of nutrients that may be lacking in a vegetarian diet are listed below.
- Iron: cashews, spinach, lentils, garbanzo beans, fortified bread or cereal
- Calcium: dairy products, fortified soy-based beverages, tofu made with calcium sulfate, collard greens, kale, broccoli
- Vitamin D: fortified foods and beverages including milk, soy-based beverages, or cereal
- Vitamin B12: eggs, dairy products, fortified cereal or soy-based beverages, tempeh, miso (tempeh and miso are foods made from soybeans)
- Zinc: whole grains (especially the germ and bran of the grain), nuts, tofu, leafy vegetables (spinach, cabbage, lettuce)
- Protein: eggs, dairy products, beans, peas, nuts, seeds, tofu, tempeh, soy-based burgers
The importance of physical activity in controlling weight
Physical activity is important for physical health, emotional well-being, and achieving a healthy weight. Physical activity may help you control your weight by using excess calories that would otherwise be stored as fat. Most foods and many beverages you eat and drink contain calories, and everything you do uses calories. This includes sleeping, breathing, digesting food, and of course, moving around. Balancing the calories you eat with the calories you use through physical activity may help you maintain your current weight.
Calories in Food MORE THAN Calories Used = Weight Gain Calories in Food LESS THAN Calories Used = Weight Loss Calories in Food EQUAL TO Calories Used = Weight Control
Being physically active may also make you more energetic, improve your mood, and reduce the risk of developing some chronic diseases.
How much physical activity do I need for general health?
Experts recommend at least 30 minutes of moderate-intensity physical activity on most, if not all, days of the week. This amount of physical activity may reduce your risk for some chronic diseases.
To lose weight, experts recommend that you should follow a nutritious eating plan and consume fewer calories than you burn each day. Remember that your weight may be affected by the balance of “calories-in” and “calories-out”. You may wish to speak with your health care provider, a fitness specialist, or a dietitian about the right amount of activity and calories for you.