11 Best Costco Finds for Weight Loss in 2026

Costco is a great place to shop for groceries, especially if you are trying to lose weight on a budget. The warehouse carries an abundance of fresh meat, fish, poultry, and produce, as well as a wide selection of pre-made and packaged food and beverages to fuel your workouts and support weight-loss goals. What should you buy at Costco if saving money and weight loss go hand-in-hand with your 2026 goals? We asked Tara Collingwood, MS, RDN, CSSD, LD/N, ACSM-CPT, a Board Certified Sports Dietitian and co-author of the Flat Belly Cookbook for Dummies, for her top 11 picks. Here are the 11 best Costco deals for weight loss in 2026.

Kirkland Signature Organic Greek Nonfat Yogurt

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