How Much Do You Really Know?

Myth: Fad diets work for permanent weight loss.

Fact: Fad diets are not the best ways to lose weight and keep it off. These eating plans often promise to help you lose a lot of weight quickly, or tell you to cut certain foods out of your diet to lose weight. Although you may lose weight at first while on these kinds of diets, they can be unhealthy because they often keep you from getting all the nutrients that your body needs. Fad diets may seriously limit or forbid certain types of food, so most people quickly get tired of them and regain the lost weight.

Research suggests that losing 1/2 to 2 pounds a week by eating better and exercising more is the best way to lose weight and keep it off. By improving your eating and exercise habits, you will develop a healthier lifestyle and control your weight. You will also reduce your chances of developing heart disease, high blood pressure, and diabetes. (For more information about how to develop and maintain a healthy lifestyle, read Weight Loss for Life, listed in the resources section at the end of this fact sheet.)

Myth: Skipping meals is a good way to lose weight.

Fact: Your body needs a certain amount of calories and nutrients each day in order to work properly. If you skip meals during the day, you will be more likely to make up for those missing calories by snacking or eating more at the next meal. Studies show that people who skip breakfast tend to be heavier than those who eat a nutritious breakfast. A healthier way to lose weight is to eat many small meals throughout the day that include a variety of nutritious, low-fat, and low-calorie foods.

Myth: "I can lose weight while eating anything I want."

Fact: This statement is not always true. It is possible to eat any kind of food you want and lose weight. But you still need to limit the number of calories that you eat every day, usually by eating smaller amounts of food. When trying to lose weight, you can eat your favorite foods--as long as you pay attention to the total amount of food that you eat. You need to use more calories than you eat to lose weight.

Myth: Eating after 8 p.m. causes weight gain.

Fact: It doesn't matter what time of day you eat--it's how much you eat during the whole day and how much exercise you get that make you gain or lose weight. No matter when you eat your meals, your body will store extra calories as fat. If you want to have a snack before bedtime, make sure that you first think about how many calories you have already eaten that day.

Try not to snack while doing other things like watching television, playing video games, or using the computer. If you eat meals and snacks in the kitchen or dining room, you are less likely to be distracted and more likely to be aware of what and how much you are eating. (If you want to snack while watching TV, take a small amount of food with you--like a handful of pretzels or a couple of cookies--not the whole bag.)

Myth: Certain foods, like grapefruit, celery, or cabbage soup, can bum 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. The best way to lose weight is to cut back on the number of calories you eat and be more physically active.

Myth: Natural or herbal weight-loss products are safe and effective.

Fact: A product that claims to be "natural" or "herbal" is not necessarily safe. These products are not usually tested scientifically to prove that they are safe or that they work.

Some herbal or other natural products may be unsafe to use with other drugs or may hurt people with certain medical conditions. Check with your doctor or other qualified health professional before using any herbal or natural weight-loss product.

Myth: Nuts are fattening and you shouldn't eat them if you want to lose weight.

Fact: Although high in calories and fat, most (but not all) types of nuts have low amounts of saturated fat. Saturated fat is the kind of fat that can lead to high blood cholesterol levels and increase the risk of heart disease.

Nuts are a good source of protein and fiber, and they do not have any cholesterol. In small amounts, nuts can be part of a healthy weight-loss program. (A 1-ounce serving of mixed nuts, which is about 1/3 cup, has 170 calories.)

Myth: Eating red meat is bad for your health and will make it harder to lose weight.

Fact: Red meat, pork, chicken, and fish contain some saturated fat and cholesterol. But they also have nutrients that are important for good health, like protein, iron, and zinc.

Eating lean meat (meat without a lot of visible fat) in small amounts can be part of a healthy weight-loss plan. A serving size is 2 to 3 ounces of cooked meat, which is about the size of a deck of cards. Choose cuts of meat that are lower in fat such as beef eye of the round, top round, or pork tenderloin, and trim any extra fat before cooking. The "select" grade of meat is lower in fat than "choice" and "prime" grades.

Myth: Fresh fruits and vegetables are more nutritious than frozen or canned.

Fact: Most fruits and vegetables (produce) are naturally low in fat and calories. Frozen and canned fruits and vegetables can be just as nutritious as fresh. Frozen or canned produce is often packaged right after it has been picked, which helps keep most of its nutrients. Fresh produce can sometimes lose nutrients after being exposed to light or air.

Myth: Starches are fattening and should be limited when trying to lose weight.

Fact: Potatoes, rice, pasta, bread, beans, and some vegetables (like squash, yams, sweet potatoes, turnips, beets, and carrots) are rich in complex carbohydrates (also called starch). Starch is an important source of energy for your body.

Foods high in starch can be low in fat and calories. They become high in fat and calories when you eat them in large amounts, or they are made with rich sauces, oils, or other high-fat toppings like butter, sour cream, or mayonnaise. Try to avoid high-fat toppings and choose starchy foods that are high in fiber, like whole grains, beans, and peas.

The Dietary Guidelines for Americans recommends 6 to 11 servings from the bread, cereal, rice, and pasta group a day, even when trying to lose weight. A serving size can be one slice of bread, 1 ounce of ready-to-eat cereal, or 1/2 cup of pasta, rice, or cooked cereal.

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. Choose salads and grilled foods instead of fried foods, which are high in fat and calories. Only use high-fat, high-calorie toppings, like

full-fat mayonnaise and salad dressings, in small amounts.

Eating fried fast food (like french fries) or other high-fat foods like chocolate once in a while as a special treat is fine--but try to split an order with a friend or order a small portion. In small amounts, these foods can still be part of a healthy eating plan.

Myth: Fish has no fat or cholesterol.

Fact: Although all fish has some fat and cholesterol, most fish is lower in saturated fat and cholesterol than beef, pork, chicken, and turkey. Fish is a good source of protein. Types of fish that are higher in fat (like salmon, mackerel, sardines, herring, and anchovies) are rich in omega-3 fatty acids. These fatty acids are being studied because they may be linked to a lower risk for heart disease. Grilled, baked, or broiled fish (instead of fried) can be part of a healthy weight-loss plan.

Myth: High-protein/low-carbohydrate diets are a healthy way to lose weight.

Fact: A high-protein/low-carbohydrate diet provides most of your calories each day from protein foods (like meat, eggs, and cheese) and few calories from carbohydrate foods (like breads, pasta, potatoes, fruits, and vegetables). People often get bored with these diets because they crave the plant-based foods they are not allowed to have or can have only in very small amounts. These diets often lack key nutrients found in carbohydrate foods.

Many of these diets allow a lot of food high in fat, like bacon and cheese. High-fat diets can raise blood cholesterol levels, which increases a person's risk for heart disease and certain cancers.

High-protein/low-carbohydrate diets may cause rapid weight loss--but most of it is water weight and lean muscle mass--not fat. You lose water because your kidneys try to get rid of the excess waste products of protein and fat, called ketones, that your body makes.