Shopping at Costco can be a boon for those looking to maintain a healthy diet without breaking the bank, especially if weight loss is on your agenda. Known for its vast selection of fresh produce, meats, and convenient packaged foods, this wholesale giant offers numerous options that can support your fitness and health goals efficiently.

As we look toward 2026, integrating affordable yet nutritious choices into your diet is crucial. To help guide your shopping list, we consulted Tara Collingwood, an experienced sports dietitian and co-author of the Flat Belly Cookbook for Dummies. She shared her top eleven Costco finds that promise to aid in weight loss while keeping costs down.

First on her list is Kirkland Signature Organic Greek Nonfat Yogurt. Collingwood praises it as a “high-protein, low-fat option perfect for breakfast, snacks, or blending into smoothies.” This yogurt not only helps you feel satiated longer but also aids in muscle maintenance, an important factor in any weight loss journey.

Kirkland Signature Organic Greek Nonfat Yogurt

Another staple Collingwood recommends is Frozen Organic Berries, particularly those from the Kirkland Signature line. She highlights them as being “rich in fiber with no added sugars,” making them an excellent choice for adding to smoothies, topping oatmeal, or enjoying as a simple snack without the worry of extra calories.

Frozen Organic Berries

Frozen Organic Berries are another must-buy, especially the Kirkland Signature brand, which offers great value. “Fiber-rich and no added sugar for smoothies, oatmeal, or snacking without excess calories,” says Collingwood.

Oatmeal

Oatmeal, which can be purchased in bulk at Costco, is an excellent value for breakfast and offers many nutritional benefits. “A high fiber whole grain that supports satiety and steady energy and perfect for meal prep and balanced breakfasts,” says Collingwood.

Frozen Salmon or Chicken Breasts

Frozen Salmon or Chicken Breasts are great to keep in the freezer for cooking lunch or dinner. Costco always sells them for a lot less than traditional grocery stores. “Lean proteins that help build and maintain muscle while assisting with appetite control,” says Collingwood.6254a4d1642c605c54bf1cab17d50f1e

Safe Catch Ahi Tuna & Wild Planet Sardines

Safe Catch Ahi Tuna & Wild Planet Sardines are another one of her top Costco picks. “Shelf-stable, high-protein seafood packed with omega-3s is an easy addition to salads, bowls, or wraps,” she says.

Protein Shakes

Costco sells protein shakes at a much lower price than other stores. “Ready to drink, high-protein beverages help curb cravings and support daily protein goals (various brands),” she says.

Kirkland Signature Organic Hummus & High-Fiber Snacks

Costco is also a great place to shop for pre-portioned snacks that are actually good for you. She recommends Kirkland Signature Organic Hummus and other high-fiber snacks. “Hummus to pair with veggies and whole grains,” she says.

Low-Sugar Sparkling Tonic Drinks

Low-Sugar Sparkling Tonic Drinks are another one of Collingwood’s Costco picks. “Can make low sugar mocktails or just use as flavored water and are a healthier alternative to sugary beverages,” she says.

Kirkland Signature Almond Flour & Hemp Hearts

Collingwood also puts Kirkland Signature Almond Flour and Hemp Hearts in her cart. “These are great for home baking and boosting protein and healthy fats,” she says.

Greens & Producee

Don’t forget to stock up on greens and produce on your Costco run. These items are priced well under retail, and make healthy eating easy. “Pre-washed leafy greens and bulk produce make it easy to fill half your plate with nutrient-dense, low-calorie foods,” Collingwood says.

Healthy Pantry Staples

And, don’t skip all the healthy pantry staples, including quinoa, beans, and other grains. “Fiber-rich whole grains and legumes help keep hunger down and support plant-forward eating patterns,” says Collingwood.