Why am I constipated while intermittent fasting?

Last reviewed · Jun 29, 2026 · Not medical advice
Quick answer

Constipation can happen if fasting reduces total food, fiber, fluids, or routine movement.

Step by step

01 Check water intake.
02 Add fiber-rich foods during the eating window.
03 Walk daily if you can.

The longer answer

Fasting changes meal timing, and some people unintentionally eat less fiber or drink less water. If constipation is painful, persistent, or unusual, get medical advice.

Tip

The eating window still needs real food, not just fewer meals.

Common mistake

Blaming fasting alone while ignoring low fiber and low fluid intake.

Track in the app

Track symptom type, timing, fasting duration, water, caffeine, sleep, and what helped.

Safety note
This is health-related educational content. Stop fasting and seek medical advice for severe, recurring, or concerning symptoms; do not fast against professional guidance.

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