When it comes to bad weight loss recommendations, dietitians have heard it all from their clients. Here are the tips they wish you’d stop believing, plus some proven strategies to use instead.

“Stop eating gluten.”

We’ve said this before, but let’s say it again: Unless you have celiac disease or non-celiac gluten sensitivity, there’s no reason to eliminate gluten from your diet, and there’s no evidence that doing so will help you shed pounds. “Going gluten-free just makes eating more expensive, takes good-tasting bread and pizza off the menu, and doesn’t guarantee a lower calorie intake,” says Georgie Fear, RD, author of . “Even if going gluten-free keeps you away from pasta and bread, there are plenty of gluten-free goodies like cookies and cake that sneak all those calories back into your diet anyway.” Instead, keep enjoying gluten-containing foods in moderation, like everything else.

Related: 9 Proven Ways to Lose Stubborn Belly Fat

“All I need to do is run enough.”

You might have heard the phrase you can’t outrun a bad diet—and, while we love running, it’s true. “I’ve had clients place exercise on a pedestal above diet and other lifestyle behaviors,” says Devon Golem, PhD, RD, director of the Didactic Program in Dietetics at New Mexico State University. “Truth is, scientific evidence reveals that diet alone is more effective than exercise alone when it comes to short-term weight loss. And for long-term weight loss, you need a combination of diet, exercise, and other lifestyle behavior changes.”

“As long as it’s healthy, you don’t have to watch how much you eat.”

Look, portions really do matter, especially when it comes to calorie-dense fats, explains Lisa Young, PhD, RD, nutrition professor at NYU and author of The Portion Teller. “I have had clients who have actually gained weight by thinking this way,” she says. “Nuts, avocados, and olive oil are healthy fats—but you have to watch your portions!” Luckily, Prevention has an easy primer on proper serving sizes right here.

Related: 15 Teeny Tiny Changes to Lose Weight Faster

“Taking a cheat day will keep your metabolism up.”

Sorry, cheat day lovers: The big increase in calories you eat on a cheat day will probably be stored as body fat, Fear explains. “The best way to keep your metabolism up and lose fat is not to down a whole pizza on Sunday, but to eat some carbs every day, strength train several times a week, get enough sleep, and eat within your calorie needs—every day of the week,” she says. (Here’s a calculator to help you determine how many calories you need to eat every day.)

“Diet and exercise are the only things you need to worry about.”

Sleep, stress, and environment all play a huge role in your weight loss efforts. “The link between sleep and weight is undeniable: The less we sleep, the more we weigh,” Golem says. “Stress is another factor that needs to be considered, especially if food or alcohol is being used as a calming strategy. Chronic stress not only influences appetite-regulating hormones, but it also affects hormones that regulate the way your body burns calories.” (Try these 10 simple sleep remedies and 6 stress-busting strategies to keep both issues at bay.)

It also pays to consider your environment, Golem explains. Research shows that people who keep unhealthy foods like soda or cookies on the kitchen counter can weigh up to 20 pounds more than those who don’t, so take a look at what kinds of foods you’re regularly stocking at home and at work. (And pick up these healthy pantry staples instead on your next trip to the grocery store.)

Related: 8 Things That Happen When You Finally Stop Drinking Diet Soda

“Buh-bye to all the unhealthy food in my life.”

Go ahead and break out your happy dance: You don’t need to cut out fries or ice cream (or whatever “bad for you” foods you love) completely. “There’s room for fatty, sugary, and salty foods, as well as alcohol,” Golem says. “It’s a matter of eating well the majority of the time.” Besides, making your diet too strict will likely backfire, leading to deprivation and bingeing. How can you actually achieve moderation? “Setting boundaries,” Golem says. “For example, I love desserts, but they’re one of my trigger foods—I have a hard time eating a proper serving size when they are around. So, my boundaries for desserts are that I eat a single portion just once a week—on Friday nights.”

The article Nutritionists Reveal The Most Misguided Weight Loss Advice They've Heard originally appeared on Prevention.

This content is created and maintained by a third party, and imported onto this page to help users provide their email addresses. You may be able to find more information about this and similar content at piano.io