Intermittent Fasting limits eating to specific time windows rather than restricting foods, becoming major diet trend (2017-2023) through Silicon Valley biohackers, celebrity adoption, and apps tracking fasting periods. Popular protocols include 16:8 (16-hour fast, 8-hour eating window) and OMAD (one meal a day), with proponents claiming weight loss, longevity, and mental clarity benefits.
Popular Protocols
IF variations:
- 16:8: Skip breakfast, eat noon-8pm
- 5:2: Normal 5 days, 500 calories 2 days
- OMAD: One meal daily
- Alternate day fasting
- Warrior diet: 20:4 window
The Science
Claimed benefits:
- Autophagy (cellular cleanup)
- Weight loss through calorie restriction
- Insulin sensitivity improvement
- Longevity in animal studies
- Mental clarity
Tech Integration
Apps and tracking:
- Zero, LIFE Fasting apps
- Timer-based approach
- Community features
- Fasting streak tracking
- Gamification
Silicon Valley Adoption
Biohacker appeal:
- Productivity optimization
- Time efficiency (skip meals)
- “Hack biology” narrative
- Jack Dorsey, Hugh Jackman endorsements
The Criticism
Concerns:
- Often just skipping breakfast
- Can enable disordered eating
- No magic beyond calorie deficit
- Hunger/social limitations
- Not suitable for everyone
- Women’s hormonal impacts
Sources:
- Intermittent Fasting Research Studies
- Fasting App Usage Statistics
- Nutrition Science Reviews