The 11 Most Common Weight-Loss Blunders Dietitians See (2024)

Losing weight can be tricky business: When you’re insanely busy, it can be tough to focus on your goals in a healthy, sustainable way, let alone work towards them at all. It’s easy to fall into pitfalls, but hey, knowledge is power—when you know the traps you’re most likely to fall into, it’s easier to steer clear.

Registered dietitians know these roadblocks all too well, and they’ve helped their clients get past them, too. Here are 11 weight loss mistakes registered dietitians warn against:

1.FOCUSING ON WHAT YOU CAN’T EAT

“So many people embarking on a weight loss journey focus on what they can’t have—[such as] no sugar, no alcohol, no dessert, no bread, no cheese. I like to tell my readers to focus on what they can have and tally up all the filling and nutritious superfoods out there.”

–Kath Younger, R.D., blogger at Kath Eats Real Food

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2.ADOPTING AN ALL-OR-NOTHING ATTITUDE

“[Don’t] eliminating foods you love. Too many people who are trying to lose weight develop the all-or-nothing attitude. This way of thinking can be detrimental in the long run. Instead of depriving oneself of foods they love, they should learn how to incorporate them into their diet in a healthier way. For example, love pasta? Instead of adding a creamy high fat sauce, add lots of veggies, grilled shrimp, and toss in olive oil and garlic. Can’t live without bread? Well, you shouldn’t have to. Make a healthy sandwich for lunch on 100 percent whole grain bread with grilled chicken, avocado, lettuce, and tomato.”

—Keri Gans, M.S., R.D., author of The Small Change Diet

3. NOT HAVING A SOLID PLAN

“Not having a solid, realistic plan [is a mistake]. People should set themselves up for success by coming up with small, challenging yet attainable action steps to work towards. Start off with a few actionable and specific goals for the first week. Once you master those, keep adding on. Before you know it, those action steps will become lifelong healthy habits.”

—Lindsey Pine, M.S., R.D., owner of Tasty Balance Nutrition

4. CUTTING OUT AN ENTIRE FOOD GROUP

“When people are trying to lose weight, they often cut out an entire food group, like carbs or meat, but this usually just results in an unbalanced diet and even deficiencies in certain nutrients. Plus, for most people, this is not sustainable for a lifetime—I always say if you couldn’t do it for the rest of your life, it’s a diet that’s probably not going to work in the long run.”

—Sarah-Jane Bedwell, R.D., L.D.N.

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5. REPLACING MEALS WITH LIQUIDS

“Green juices and smoothies are very popular right now, and a lot of people will use these as meal replacements. Unfortunately, oftentimes these beverages aren’t made up of the right mix of nutrients. Green juices lack fiber and protein, which are key nutrients in keeping you full and helping you meet your nutrient recommendations, and smoothies are typically loaded in sugar from juice, sweeteners, or too much fruit, and can be really high in calories from oversized portions of healthy fat sources like nuts and seeds.”

—Maxine Yeung, M.S., R.D., owner of The Wellness Whisk

6. EATING TOO FEW CALORIES

“The biggest pitfall I constantly see my clients falling into is the calorie counting trap. Many women come to me struggling to follow a 1,200 calorie per day diet and ask me what would help them to feel more full during the day. My answer is always to eat more! We live in a culture that is so obsessed with calorie counting that oftentimes we are depriving our body of the very nutrients that will actually help us not only to live healthier, but lose more weight. In my practice I try and help my clients transition from counting calories to counting nutrients because at the end of the day, what you eat is just as important as how much you eat.”

—Emily Cope-Kyle, M.S., R.D. owner and consulting dietitian at EmilyKyleNutrition.com

7. STEERING CLEAR OF HEALTHY FATS

“I find that many people are stuck eating low-fat or fat-free versions of food, a holdover from the fat-phobic days of the ’70s, ’80s, and ’90s. A moderate amount of fat is important as it helps with satiety. Plus, people end up replacing fat with refined carbs, which we now know can have a detrimental effect on health and weight. Include healthy fat at every meal, in the form of nuts, seeds, liquid oils, avocados, oily fish, soy, and dairy products.”

—Alissa Rumsey, M.S., R.D., spokesperson for the Academy of Nutrition and Dietetics

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8.DITCHING FRUITS AND VEGGIES WITH HIGH SUGAR CONTENT

“[I see people] cutting out certain fruits and vegetables because they think they contain too much sugar. Sure, some do contain a bit higher amount of naturally occurring sugars, but they also contain fiber, which helps counterbalance the effect on blood sugars. Compared to highly processed snacks and drinks, there is nothing to be worried about.”

—Michelle Dudash, R.D.N., creator of the Clean Eating Cooking School.

9. RELYING ON WEIGHT LOSS PILLS

“The bottom line here is if there was a pill or a potion that really worked in the long term, then not one of us would be talking about weight management at all! The weight loss industry is…so successful because we are so desperate to find a quick fix. The only long-term effective weight management skill is to change the way think about fueling our bodies. We need to think of food as fuel for daily living and to fuel it the best way we can. The rest takes care of itself.”

—Jennifer O’Donnell-Giles, M.S., R.D., C.S.S.D.

READ MORE > WEIGHT LOSS 101: WHAT’S ACTUALLY HAPPENING INSIDE YOU? [INFOGRAPHIC]

10. TAKING THE WEEKENDS OFF FROM HEALTHY EATING

“You should take the weekends off from your job, not your diet. Sure, you can still have fun and go out to eat on the weekends, but make an effort not to stuff yourself to the brim with food or drinks. Simply eating mindfully when you are enjoying good food can be enough to not wreck your hard work during the week. If the weekends are a problem for you, consider weighing yourself Friday mornings and Monday mornings. If you see that number routinely creeping up on Monday, try changing your weekend routine to include more exercise and healthier food choices.”

—Heather Mason, M.S., R.D.

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Jake Curtis, Getty Images

11. NOT DRINKING ENOUGH WATER

“A lot of my clients don’t drink enough water. Changing this habit is one of the easiest ways to help your health. Studies show that drinking water or eating a water-rich salad or broth-based soup before a meal can help decrease how much you eat during the meal—plus, staying hydrated helps prevent headaches, which can lead to stress eating. Figure out how you prefer to get your water: Do you like a bottle with a straw or a wide-mouthed top? Whatever your preference, keep a water container at your side as often as you can. You’ll reach for it a lot more if you don’t have to get up to fill a glass.”

—Amy Gorin, M.S., R.D., owner of Amy Gorin Nutrition

By Alexa Tucker

The 11 Most Common Weight-Loss Blunders Dietitians See (2024)

FAQs

The 11 Most Common Weight-Loss Blunders Dietitians See? ›

Eating too little

Too often I come across clients who want to lose weight and find out that they are actually eating too little, affecting their body's metabolism so much that their body adjusts to surviving on very small amounts of fuel.

What is the biggest mistake people make when trying to lose weight? ›

Eating too little

Too often I come across clients who want to lose weight and find out that they are actually eating too little, affecting their body's metabolism so much that their body adjusts to surviving on very small amounts of fuel.

What is the number one rule to losing weight? ›

Losing weight can seem intimidating and overwhelming, but the number one rule is surprisingly simple - eat less and move more. Eating fewer calories than your body needs to maintain its current size is essential for any successful weight-loss journey.

What do nutritionists say is the best way to lose weight? ›

Eat enough protein and fiber. This can make you feel fuller. Eat the right variety of foods. Eat enough fruits, vegetables, and whole grains.

What foods should I avoid to lose belly fat? ›

Worst Foods for Your Belly
  • Doughnuts. 1/21. Can't resist fresh doughnuts? ...
  • Ice Cream. 2/21. You do get some calcium from ice cream. ...
  • Chips. 3/21. A serving of 15 chips has 160 calories. ...
  • Bacontini. 4/21. This co*cktail is as fatty as it is trendy. ...
  • Beer. 5/21. ...
  • Hot Dogs. 6/21. ...
  • Fatty Red Meat. 7/21. ...
  • Meat-Topped Pizza. 8/21.
Apr 24, 2022

Which vegetables should I avoid for weight loss? ›

At the end of the day, experts like Komova, Chatfield, and Mitri say that beans/legumes and white potatoes can be the worst vegetables for weight loss if eaten in excess because of their high starch content. You can either limit your intake of these vegetables or switch to lower-calorie options like sweet potatoes.

What foods should I avoid to lose weight over 50? ›

In this article, we'll explore seven foods that you might consider avoiding or limiting once you cross the half-century mark.
  • Processed Desserts. ...
  • Cured Meats. ...
  • Fried Foods. ...
  • Soda / Soft Drinks. ...
  • Alcohol. ...
  • Pre-Packaged Meals. ...
  • High-Sodium Foods.
Feb 15, 2024

What is the 80 20 rule to lose weight? ›

What Is It? The idea is simple: Eat healthy meals 80% of the time, and have more freedom with the other 20%. But how it's done and how it will affect your weight can be different for everyone.

What is the 7 second rule for weight loss? ›

This method involves inhaling for three seconds and exhaling for seven seconds. According to Ryosuke, since fat contains oxygen, carbon, and hydrogen, when we breathe, the oxygen reaches fat cells and in turn, divides them into other components — “the more oxygen your body uses the more fat you burn”.

What is the 5 second rule for weight loss? ›

If you have an impulse to act on a goal, you must physically move within 5 seconds or your brain will kill the idea.

Which body part loses fat first, a woman? ›

Where do women lose weight first? Women tend to lose weight in their legs first, from both muscle and fat loss. Women have more body fat than men in general, especially in the hips and thighs. This can change during menopause, when women tend to experience fat gain, particularly in the central parts of their body.

How do you kick start your metabolism? ›

5 ways to boost metabolism
  1. Exercise more. Add interval training to your cardio routine and burn more calories in less time. ...
  2. Weight train. Add muscle mass to your body and you can burn more calories at rest. ...
  3. Don't skip meals, especially breakfast. ...
  4. Eat fat-burning foods. ...
  5. Get a good night's sleep every night.

How to lose 50 pounds in 3 months? ›

To lose 50 pounds in three months, you will need to create a weekly calorie deficit of at least 14,000 calories, in order to lose about four pounds a week. That means you will need to create a 2,000 calorie daily deficit.

What are the 5 worst foods for belly fat? ›

Refined Foods: Bagels, doughnuts, bread, pasta, cereals, and pretzels are all wrong for your gut. They add to the abdominal fat and spoil the body's internal balance.

Why are most people unsuccessful in permanently losing weight? ›

For most overweight people, their body tries to prevent permanent weight loss. This means your body is actually working against you to lose weight. That's because how much you weigh is controlled by complex interactions between hormones and neurons in your hypothalamus.

Why do most people fail to lose weight? ›

Diets can actually lower your metabolism.

When you drastically cut back on calories, your metabolism tends to slow down. You burn fewer calories and the diet becomes less effective.

What affects weight loss the most? ›

These likely include genes, hormones, diet and lifestyle, including sleep, physical activity and stress. You gain weight when you eat more calories than you burn — or burn fewer calories than you eat. Some people seem to lose weight more quickly and more easily than others.

Why do most weight loss attempts fail? ›

Our bodies are wired for survival, and they interpret less energy availability (through dieting) as a threat to survival. Therefore, our bodies react to calorie deprivation with countermeasures that include metabolic, hormonal and neurological changes that overwhelm willpower.

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