Does Intermittent Fasting Actually Work?

February 18, 2026
Does Intermittent Fasting Actually Work?

Randomized trials of intermittent fasting (16:8, 5:2) consistently show weight loss on par with continuous calorie restriction. The mechanism is the deficit, not the clock.

Where IF genuinely helps

Compressing eating into 8 hours naturally reduces mindless snacking for many people, making a deficit easier to hit.

It can improve insulin sensitivity and simplify meal planning.

Where it doesn't beat other diets

Head-to-head vs continuous restriction: no significant edge for fat loss when calories and protein are matched.

Whatever schedule you pick, hit your target.

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