OMAD is a form of intermittent fasting that restricts daily caloric intake to a single meal, typically within a one-hour window. This extended fasting period aims to promote metabolic flexibility, enhance cellular repair processes like autophagy, and improve insulin sensitivity. It can be an effective strategy for weight management and may contribute to longevity pathways by optimizing metabolic health.
Verdict
Effective for metabolic health, requires careful nutrient planning.
HEALTHSPAN IMPACT
High Value
RISK LEVEL
Low
EVIDENCE GRADE
B
MONTHLY COST
$0 - $0
Protocol
- Consume all daily caloric intake within a single, typically 1-2 hour, eating window, followed by a 22-23 hour fast.
Flags
- Not suitable for pregnant/breastfeeding individuals, those with eating disorders, or certain medical conditions.
- Risk of nutrient deficiencies if food choices are not carefully planned and diverse.
- May cause initial fatigue, headaches, or irritability during adaptation phase.
- Potential for orthorexia or other disordered eating patterns in susceptible individuals.
- Consult a physician, especially if on medications for diabetes or blood pressure.