Energy bars have a so-called "health halo," making it easy to believe they're inherently nutritious. But that's not always the case. Low-fat energy bars can be ultra-processed and packed with funky ingredients. Protein One's Strawberries and Cream bars, for example, may be low-fat at just 2 grams per bar, but their ingredient list reads like a chemical formula of artificial flavors, colors, syrups, and oils.