Shopping at Whole Foods is a good lesson in correlation vs. causation. It’s easy to walk around Whole Foods and see all of the skinny people and think, “If I shop here, I’ll lose weight!”
The reality is, you can shop at Whole Foods and gain weight, lose weight, or stay the same; it’s all based on WHAT you buy at Whole Foods. Take the cookies and chocolate in the above example. Since they are offered at Whole Foods and contain organic ingredients, they have a health halo effect, meaning you think they are healthier and won’t impact your weight as much. But in terms of calories, sugar, etc. these foods aren’t any healthier for you and will set you back on your weight goals (unless you’re trying to gain weight).
The benefit of upscale grocery chains such as Whole Foods is that they have an abundance of fresh fruits and vegetables, legumes, and unprocessed foods. If you stick to those while shopping at Whole Foods, you have a much better chance of reaching your weight goals.