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Peer-reviewed study

Intermittent fasting is a structure, not a guarantee

Intermittent fasting for adults with overweight or obesity

NutritionCochrane systematic review2026
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PubMed sourceMore Nutrition researchHow to read the studies

Kris Oddo, NASM-certified personal trainer, is the founder and head coach of Gains From Geebs (Geebs Coaching), a 1:1 online fitness coaching practice.

Quick answer

What this study found

If fasting makes meals simpler, use it. If it creates rebound eating, low protein, or poor training, it is the wrong tool for that person.

How strong is this kind of study?

  1. Reviews of many studiesThis study
  2. Controlled trials
  3. Observational
  4. Narrative reviews

Cochrane systematic review. Heavier plates are built from more studies, so they move less when the next one lands.

At a glance

What kind of study this is

Strongest evidence

This pools results from many separate studies, so it carries more weight than any single trial on its own.

Design
Cochrane systematic review
Published
2026
Journal
Cochrane Database of Systematic Reviews
Reference
PMID 41692034

Source details

Who ran it, and where to read it.

Authors
Garegnani et al.
PubMedDOI

Honest limits

What this study does not prove.

Intermittent fasting is not required for fat loss or obesity treatment. Medical weight management belongs with qualified clinicians.

Kris Oddo, NASM-CPT, in the gym
Kris Oddo, NASM-CPT. The study is the evidence; the paragraph below is what he actually does with it.

Kris's practical takeaway

Here's what to do with it.

If fasting makes meals simpler, use it. If it creates rebound eating, low protein, or poor training, it is the wrong tool for that person.

Ways to use it

Safe ways to apply it.

Fasting only works if the week works

Meal timing should reduce friction

Do not trade breakfast for rebound eating

Related questions

Questions this research helps answer.

Eating window answer

Is time-restricted eating better for fat loss?

Time-restricted eating can help some people control intake because it simplifies the day. It is not a universal fat-loss shortcut. The eating window still has to support calories, protein, training, sleep, and adherence.

Related guides and studies

Keep learning about nutrition.

Nutrition studiesIs Intermittent Fasting Better Than Calorie RestrictionIs Time Restricted Eating Better For Fat LossWeight loss without hating dieting

FAQ

Quick questions

What is the practical takeaway from this study?

If fasting makes meals simpler, use it. If it creates rebound eating, low protein, or poor training, it is the wrong tool for that person.

What does this study not prove?

Intermittent fasting is not required for fat loss or obesity treatment. Medical weight management belongs with qualified clinicians.

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Next in nutritionFasting outcomes still need protein and training context

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