Should we buy food with health claims on the label?

These days, we are seeing more and more health claims that go beyond the usual. These include “trans fat-free,” “gluten-free,” “heart healthy,” and foods spiked with vitamins, such as my new favorite: Diet Coke Plus, with vitamins and minerals.

We see whole-grain Pop Tarts and Tyson chicken with misleading labels such as “raised without antibiotics.” We see natural sweeteners called Sweet Fiber. We see whole-grain Cheerios that are still full of sugar.

Now you can get “health food” like salads at McDonald’s, but with salad dressings that have more calories than a Big Mac.

And we also see antioxidant-spiked junk food and ginkgo-spiked energy drinks.

What should we make of all these marketing claims? Do they provide any benefit?