3 Costco Foods You Should NEVER Buy, According To A Health Expert

Fresh Produce

That much fresh fruit and vegetables will only go to waste, experts warn. "The 20lb bag of potato’s may seem like a bargain, but unless you are cooking for a high school cafeteria it’s likely lots of those potatoes will go to waste," Thurman says.

"The fresh fruits and vegetables at Costco are always sold in bulk. However, buying them and bringing them home in high quantities always turns out to be wrong," holistic health expert Alessandra Kessler of Healthy Body Healthy Mind agrees. "Not even half of the products are consumed, and they turn stale. Stale vegetables can be unhealthy to eat."

Condiments

"These have a limited shelf life, according to the research conducted by the Showbiz CheatSheet on Costco, mustard and ketchup can be used for a larger duration but mayonnaise expires after 3 months by date whereas mustard can go bad in a year," chef and blogger Grace Woinicz of The Brilliant Kitchen explains.

Flour

"Flour attracts moisture and will dampen if kept for long periods," warns health and wellness expert Megan Ayala of Patricia and Carolyn warns. "It’s better not to buy more than you need in a specific period of time to make sure it stays fresh and is usable."

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