Methods

The 5:2 Diet: Complete Guide to Weekly Fasting

Learn how the 5:2 intermittent fasting diet works, its benefits for weight loss, and how to implement this weekly fasting approach effectively.

12 min readUpdated January 2, 2026

The 5:2 diet is a popular form of intermittent fasting that takes a weekly approach rather than daily. This method involves eating normally for 5 days while restricting calories to 500-600 on 2 non-consecutive days.

How the 5:2 Diet Works

Unlike daily fasting methods, the 5:2 diet focuses on weekly calorie restriction. On your two fasting days, you consume just 500 calories (women) or 600 calories (men). The remaining five days, you eat normally without calorie counting.

Benefits of the 5:2 Diet

  • No daily fasting required - only 2 days per week
  • Easier to maintain socially
  • Flexible choice of fasting days
  • Effective for weight loss
  • Improves insulin sensitivity
  • May enhance brain function
Research FindingStudies show the 5:2 diet can lead to 5-7% weight loss over 3-6 months, comparable to daily calorie restriction but easier to maintain.

Sample Fasting Day Menu

On your 500-600 calorie days, focus on protein and vegetables to stay full. Here's a sample day:

  • Breakfast: Skip or have black coffee/tea
  • Lunch: Large salad with grilled chicken (250 calories)
  • Dinner: Steamed fish with vegetables (250 calories)
  • Snack: 1 boiled egg if needed (70 calories)

Tips for 5:2 Success

  • Choose non-consecutive fasting days (e.g., Monday and Thursday)
  • Stay busy on fasting days to manage hunger
  • Drink plenty of water and zero-calorie beverages
  • Plan your fasting day meals in advance
  • Don't overeat on normal days to compensate

Who Should Try the 5:2 Diet?

The 5:2 diet is ideal for people who find daily fasting too restrictive, have variable schedules, or prefer a weekly approach to weight management. It's also suitable for those who struggle with consistency in daily fasting.

Related Topics

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Medical Disclaimer: This article is for informational purposes only and is not a substitute for professional medical advice. Always consult with a qualified healthcare provider before starting any fasting regimen.

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