Is intermittent fasting safe? Science-backed insights you need

Written by: Deepa

24 September 2025

This common eating pattern claims to result in weight loss and improved health — but is it really safe? 

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Let's find out what research says.

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Intermittent fasting (IF) refers to alternating periods of eating and fasting — common methods include 16:8 (fast 16 hrs) and 5:2 (eat normally 5 days).

What is Intermittent Fasting?

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Intermittent fasting may cause fatigue, headaches, deficiencies, and/or overeating later. People with diabetes, or those with regarding eating disorders or medical conditions may be at a higher risk.

Possible Risks

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Women who are pregnant or breast feeding, children, or those with chronic illness or medication should speak to a doctor before starting intermittent fasting.

Who Should Avoid?

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Stay hydrated, eat meals rich in nutrients during your eating periods, and avoid binge eating. This will help you maintain safety and efficacy while practicing intermittent fasting.

Tips for Safe Fasting

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Intermittent fasting can be safe for many healthy adults — but your health status factors in. If in any doubt, seek advice from a health care provider.

Final Takeaway

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