10 Diet Myths That Pack On Pounds

Don't let one of these rumors prevent you from reaching your weight loss goals

November 3, 2011




1. "Strength training will bulk me up."



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3. "It's harder for women to lose weight than for men."




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4. "All calories are equal, so it doesn't matter what I eat."




5. "Eating fat will make me fat."




6. "Eating at night will make me gain weight."

Cutting out nighttime snacking is a popular weight loss strategy because it feels logical—eat less when you're less active. But this topic has been debated for years, and a study in the April 2011 journal Obesity suggested that eating after 8 PM may increase the risk of obesity, but there aren't clear-cut reasons why.

It's mainly how much you eat—not when you eat—each day that affects weight gain. Many people eat at night out of boredom or other emotions instead of hunger, and they wind up consuming more calories than they need for the day—calories that are then stored as fat. Also, people who eat at night may wake up without an appetite and skip breakfast, the meal that helps control calorie intake throughout the day.

To ward off nighttime hunger, eat dinner an hour later, suggests Marjorie Nolan, RD, a spokesperson for the American Dietetic Association. You'll save calories by curbing the urge to nosh in front of the TV. "Having dinner a little bit later—but at least 2 hours before sleeping—helps prevent mindless snacking, which often happens in the evening," says Nolan.

7. "Drinking a ton of water will help me drop pounds."

Stop hogging the office watercooler (and running to the loo). It's possible that drinking water can aid weight loss efforts, but it won't automatically make you lose weight if you're not changing any other habits. A University of North Carolina at Chapel Hill study found that people who regularly drink water eat nearly 200 fewer calories daily than those who consume only coffee, tea, or soda. And if you sip water instead of sugary drinks, the calories you've saved will help shed pounds. 

Drinking ice-cold water can help you burn more calories, too. German researchers found that drinking 6 cups of cold water a day raised resting metabolism by about 50 calories daily—possibly because of the work it takes to warm the fluid up to body temperature. It's up to you to decide whether 50 calories is worth guzzling ice water—or whether it would be easier just to take the stairs.

8. "Becoming a vegetarian will help me drop a size."

Eliminating meat from your diet can result in great health benefits, but if you don't follow a vegetarian diet properly, you could accidentally pack on pounds.

Dawn Jackson Blatner, RD, author of The Flexitarian Diet, explains common vegetarian beginners' mistakes that may cause weight gain. Vegetarian "types" to avoid becoming:

Cheese-aholic vegetarians: They cut out meat from their diets and turn to cheese as a protein source. But cheese is a high-calorie, high-fat food and should be eaten in moderation. 

Faux-meat fixators: All they eat is boxes of frozen faux meats, such as soy chicken nuggets, vegetarian sausage links, and veggie bacon strips. These products are okay once in a while, but they are heavily processed and can have a lot of sodium, resulting in bloating and water retention.

No-veggie vegetarians: A lot of vegetarians don't eat enough fruits and vegetables. They eat only grains, beans and veggie burgers, all of which can be high in calories.

Same-meal-minus-the-meat vegetarians: These people eat the same meals they did before, but without the meat. If they're not replacing the protein, they'll probably have a ferocious appetite and may be missing out on essential nutrients.

"Vegetarian" food label fans: These people find any recipe or packaging that contains the word "vegetarian" or "meatless" and then overeat that food. They often wind up taking in too much junk food. Be aware that the word "vegetarian" is not synonymous with "healthy" or "low calorie."

Blatner recommends replacing meat with beans in recipes for an easy, healthy—and inexpensive—protein source. She advises new vegetarians—and those who want to dabble in a vegetarian diet—to start having fun with vegetarian recipes. "Find ones you like that you're going to keep eating. Enjoy the journey of it."

More from Prevention: 5 Women Who Went Vegetarian And Love It

9. "Subbing diet soda and diet foods is a smart way to lose."

Chugging cans of diet soda and eating prepackaged diet foods may seem like a no-brainer way to trick your body into pound-shedding mode because they have few or no calories—but it's not going to give you lasting results.

Diet soda may increase your risk of metabolic syndrome, a group of symptoms that includes high levels of belly fat, blood sugar, and cholesterol. People who consumed just one diet soda daily had a 34% higher risk of the syndrome than those who abstained, according to a University of Minnesota study of nearly 10,000 adults ages 45 to 64.

What you're trying to do when you eat diet foods and drink diet soda is to cheat your body, says Ashley Koff, RD, resident dietitian on the new Lifetime show Love Handles: Couples in Crisis. "The body is physiologically smarter than your ability to override it. If you use one of those things as your tool, you're always going to need that. And you might be getting weight loss results but no health benefits." She says many people eventually get frustrated that they became dependent on these products.

"My approach across the board is that the best thing you can do is be a 'qualitarian,'" says Koff. "Choose the best-quality foods available. The diet versions will have fewer calories than the quality versions, but they'll also have fewer nutrients."

More from Prevention: 14 Diet Foods That Make You Fat

10. "Weight gain and belly fat are unavoidable after 40." 

Let's be honest here: You're not going to wake up on your 40th birthday with a gut and 10 extra pounds on your frame. It does get harder to lose weight as we age, but you can put some healthy habits into practice now to maintain your weight—or even lose—as the years pass by.



Fine-tune your workouts and eating habits to shed those pounds—and keep 'em off—with these tips:

Exercise at least 4 hours a week: That amount helped nearly 44,000 women in their 40s or early 50s achieve weight loss instead of weight gain during a 10-year American Cancer Society study.  

Crank it up for 10 minutes a day: In a Kaiser Permanente study, a similar group of women who exercised vigorously (by jogging, for instance) for 10 or more minutes a day had waistlines nearly 6 inches smaller than those of women who didn't raise their heart rates that high.

Lift weights: Two or three sessions a week can help stave off age-related muscle loss, which slows your metabolism.

Skip the refined carbs: Women whose diets were high in whole grains and fiber gained less weight than those who ate more sugar and white flour, reports a Danish study.

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