Who should not try intermittent fasting?

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

Intermittent fasting is not for everyone, including children, teens, pregnant or breastfeeding people, people with type 1 diabetes on insulin, and people with eating disorder history.

Step by step

01 Check whether you are in a higher-risk group.
02 Ask a healthcare professional if unsure.
03 Choose non-fasting habits if fasting is not appropriate.

The longer answer

Johns Hopkins specifically lists groups who should not try intermittent fasting, and Mayo adds caution for eating disorders, pregnancy, breastfeeding, and people at high risk of bone loss and falls.

Tip

This page should be clear and protective, not conversion-heavy.

Common mistake

Trying to sell fasting to everyone.

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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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