Fasting Expert DOESN’T Recommend One Meal A Day - Here’s WHY
Resetter PodcastPublished on August 28, 2026
Summary authored by editor@wellifi.com
TLDR Summary
One Meal a Day (OMAD) can yield short-term results but poses sustainability and health risks, making it unsuitable for frequent use. A tiered fasting approach offers a more personalized and beneficial strategy for health and wellness.
Key Points
- One Meal a Day (OMAD) is not recommended for regular use due to sustainability and health risks.
- OMAD may help with weight loss and reduce snacking for some individuals.
- Individuals should ensure they can meet their nutritional needs within a single meal if attempting OMAD.
- Research indicates that alternate day fasting may be more effective than OMAD for long-term results.
- A tiered fasting approach may provide a more sustainable and individualized strategy for health.
Understanding One Meal a Day (OMAD): A Cautionary Approach
Intermittent fasting has gained popularity for its potential health benefits, yet not all methods are suitable for everyone. In this article, we focus on the one fasting protocol that Dr. Mindy Pelz does not recommend for regular practice: One Meal a Day (OMAD). While this approach may yield results for some, repeated use can be unsustainable and potentially harmful. Here’s what you need to know about OMAD, its benefits, drawbacks, and how to approach fasting sustainably.
What is One Meal a Day (OMAD)?
OMAD is a more extreme form of fasting where individuals consume all their daily calories within a one to two-hour window, effectively fasting for the remainder of the day. While it may work for some in the short term, it lacks the rhythm and sustainability needed for long-term health.
Who Should Consider OMAD?
While Dr. Pelz emphasizes caution, OMAD may be suitable for:
- Individuals who are metabolically stable and can go without food without adverse effects.
- Those who can meet their nutrient requirements within a single meal.
- People looking to reset eating habits or reduce food noise occasionally.
Benefits of OMAD
Despite the cautions, OMAD may offer some advantages:
- Simplicity: Easier to adhere to calorie restrictions since all food is consumed in one meal.
- Weight Reduction: Some studies suggest that compressing the eating window may lead to weight loss and improved glucose markers.
- Reduced Snacking: Provides a clear boundary that can prevent unnecessary grazing throughout the day.
Drawbacks of OMAD
However, there are significant concerns regarding the long-term use of OMAD:
- Difficulty in Nutrient Intake: Achieving adequate protein, fiber, and essential vitamins and minerals within one meal can be challenging.
- Potential Health Risks: Research suggests that frequent use of OMAD may be associated with higher all-cause and cardiovascular mortality.
- Not Suitable for Everyone: Pregnant women, nursing mothers, individuals with existing health conditions, and those underweight should avoid OMAD.
Research Insights on OMAD
A meta-analysis published in 2025 reviewed various intermittent fasting approaches, indicating that while fasting can promote weight loss, OMAD’s efficacy is not superior to calorie restriction. Moreover, alternate day fasting was highlighted as a more effective method for sustainable weight loss and improved cardiovascular health.
Finding a Sustainable Fasting Rhythm
Fasting should be personalized, and Dr. Pelz suggests a tiered approach to fasting:
- Tier 1: 13-16 hours of fasting for beginners, focusing on daily resets.
- Tier 2: 17-24 hours for gut repair and deeper fat burning.
- Tier 3: 36 hours for metabolic resets and significant weight loss.
- Tier 4: 48-72 hours for advanced fasters seeking deep cellular renewal.
Individuals are encouraged to assess their health goals and fasting experience before choosing a tier, aiming to progress gradually.
Conclusion
While OMAD may work for some, it is essential to recognize its limitations and potential health risks. A personalized, tiered fasting approach guided by individual health goals may offer a more sustainable and beneficial pathway to wellness. Always consult with a healthcare provider before making significant dietary changes.