Are CLIF Bars healthy?

Covers whether CLIF Bars are a good choice for men’s fitness and performance goals by breaking down calories, macros, sugar, fiber, and ingredient quality. Helps you decide when they make sense for training fuel versus when they may hinder fat loss, blood sugar control, or overall nutrition.

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Are Clif Bars healthy or just clever marketing?

Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Nov 27, 2025 · 10 min read

For most sedentary people, a Clif Bar isn’t a “healthy” snack—it’s often a ~250‑calorie, ~20‑gram sugar glucose load that can spike insulin and blunt lipolysis (fat burning). Here’s how to read the ingredient matrix and know when a bar is functional fuel versus candy with a halo. “Most patients treat protein bars as a free ...