Intermittent fasting (IF) is one of the most popular nutritional approaches of recent years. It focuses on when you eat, not what you eat.
What Is Intermittent Fasting?
A structured eating pattern that alternates between eating and fasting periods. It is not a "diet" in the traditional sense.
Popular Methods
16:8 Method
16 hours fasting, 8-hour eating window (e.g. 12:00–20:00). The most common method.
5:2 Diet
5 days of normal eating, 2 non-consecutive days restricted to 500–600 kcal per week.
The Metabolic Science
- Insulin drops → fat can be used as energy
- Autophagy is activated (cellular clean-up — Nobel Prize 2016)
- Growth hormone rises → muscle protection
Who Should Avoid It?
Pregnant or breastfeeding women, people with type 1 diabetes, those with a history of eating disorders and people under 18.
Conclusion
IF is effective and sustainable for the right people — but not universal. Evaluate it with a dietitian for the best results.