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How Intermittent Fasting Affects Weight Loss

What is intermittent fasting?

Intermittent fasting (IF) is not a diet - it is an eating schedule. You compress your eating into a window (commonly 8 hours) and fast outside it. The most studied protocols are 16:8 (16 fasted, 8 eating), 14:10, 18:6 and the 5:2 (two low-calorie days a week).

Why it works

Two reasons. First, most people naturally eat less when their eating window is shorter - there is simply less time to over-snack. Second, the longer fasting period lowers insulin, allowing the body to access stored fat more easily. Studies show 3-8% body weight loss over 8 to 24 weeks.

The Indian fit

16:8 fits the Indian schedule beautifully. Skip breakfast or finish dinner by 7 PM and you are already on a 12-14 hour fast. Indian dinner-eating culture, where families eat together late, often makes a fasted morning the easiest version.

Who should not try IF

Pregnant women, people with a history of eating disorders, type 1 diabetics, those on multiple diabetes medications and growing teenagers. Women with PCOS and stress-driven cortisol issues should ease in gradually with 12:12 or 14:10 first.

How to start

Week 1: 12 hours fasted, 12 hours eating. Week 2-3: 14:10. Week 4 onwards: 16:8 if it feels good. Drink water, black coffee or plain tea during the fast.

Fasting protocols work best when combined with a personalised meal plan.
Fasting protocols work best when combined with a personalised meal plan.

Key Takeaways

  • IF is an eating schedule, not a diet - food quality still matters
  • 16:8 suits most Indian schedules; start with 12:12 if you are new
  • Avoid IF if pregnant, on insulin or with disordered eating history
  • Pair fasting with a high-protein eating window for best results

Frequently Asked Questions

Yes - black coffee, green tea or plain tea without milk or sugar. Sweetened or milky chai breaks the fast.

No, not at fasting windows of 16 hours or less. Metabolism only suppresses meaningfully after 60+ hours.

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