Foods You Can Eat Without Gaining Weight

What about fruit?

Fruits are a different story. With most of them, you don’t want to go overboard. “Grapes are a perfect example. A lot of people love to snack on grapes and could eat the whole bag in an afternoon without really thinking about it. But grapes are a high-sugar food,” Supan cautions. “Keeping most fruits to a cup-and-a-half for the day is a good goal to have.”

The exceptions are berries (strawberries, blueberries, blackberries), kiwi and grapefruit. These fruits are high in fiber and low on the glycemic index — which means they won’t boost your blood sugar too much. Just be careful before eating grapefruit to make sure it doesn’t interact with any medications (such as statins) you take. And don’t load it up with sugar to make it taste sweeter.

Filling up the healthy way

If you’re looking for all-you-can-eat foods, it may be worth revisiting your entire diet to make sure it’s satisfying. “When people eat the right meals throughout the day, that tends to fill them up much more, and they don’t have that constant hunger,” Supan says.

Many other foods pack a powerful nutritional punch for their calorie count. Examples are healthy proteins such as fish, chicken, tofu or beans, which should be part of each meal. You also want to add healthy fats from nuts and olive oil, vegetables and whole grains such as quinoa or brown rice to your meals. “These foods will create satiety, and you can go longer without feeling that urge to snack, so you won’t overindulge,” Rydyger says.

Snacking on other high-protein, high-fiber foods will help to hold you over until dinnertime. A can of tuna, an apple with a tablespoon of peanut or almond butter, a handful of nuts, a cup of plain air-popped popcorn, a half-cup of cottage cheese or a hard-boiled egg all make excellent options. Though they do contain calories, they’re high in protein, so you won’t be tempted to overeat at your next meal.

Moving away from processed meats and toward plant-based proteins can provide benefits for your heart as well as your waistline. A November 2023 analysis of studies published in BMC Medicine found that replacing processed meats with nuts, legumes and whole grains led to a lower risk of heart disease and death.  

Drinking a glass of water or having a cup of bone broth (which contains protein in the form of collagen) might also help fill you up before a meal.

Revamping your diet

When you’re used to eating a certain way, making large-scale changes to your diet can feel overwhelming. “That’s why I recommend for clients to start very slow. Make a few swaps each week, and see if that works. Maybe add one vegetable into a meal once a day,” Rydyger suggests. “Starting very small and building your way toward a lifestyle change is important.”

When it comes to dieting, the aim is not “How low can you go?” Your body needs calories for energy. Try to focus less on the numbers and more on the overall quality of your diet. The most important thing is to eat whole foods — ones that aren’t processed in a factory. 

Eating nothing but low-calorie foods could rob your body of the nutrients it needs, such as the calcium that keeps your bones strong. Plus it could leave you starving and have the opposite of the intended effect. 

“Those low-calorie diets lead to blood sugar instability and harsh crashes,” Rydyger says. “You’re bound to crash at some point and overcompensate with even more food than you had originally planned to eat.”

When making changes to your diet, you don’t need to go it alone. It’s preferable to get some help from your primary care doctor or a dietitian. Your doctor can check your vitamin and cholesterol levels to make sure you safely embark on your new way of eating. A dietitian can assess your needs and create a meal plan that’s not only tailored to your goals but also sustainable over the long term.