The Claim

After 12 weeks of a web-based intermittent fasting program with meal replacements, no significant changes occurred in HbA1c, triglycerides, cholesterol, or quality of life measures in Japanese adults with overweight or obesity.

Source: A Brief Web-Based and Mobile Intervention of Intermittent Fasting With Meal Support for Weight Loss Among Adults With Overweight and Obesity in Japan: Pilot Randomized Controlled Trial

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
75score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Description
1 study reviewed
In plain English

In Japanese adults with overweight or obesity, a 12-week web-based intermittent fasting program using meal replacements did not change levels of HbA1c, triglycerides, cholesterol, or quality of life.

See the scientific wording

No significant changes in metabolic biomarkers (HbA1c, triglycerides, cholesterol) or quality of life were observed after 12 weeks of a web-based intermittent fasting program with meal replacements in Japanese adults with overweight or obesity, suggesting limited impact on these outcomes in the short term.

Why this might work

The body did not burn more fat or improve how it handles sugar because the person still ate the same total amount of calories, just at different times, and the replacement meals kept nutrient levels steady, so blood sugar, fats in the blood, and how the person felt stayed the same.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: A Brief Web-Based and Mobile Intervention of Intermittent Fasting With Meal Support for Weight Loss Among Adults With Overweight and Obesity in Japan: Pilot Randomized Controlled Trial

    The study found that after 12 weeks of this fasting program, people’s blood sugar, cholesterol, and how they felt overall didn’t change — just like the claim says. So yes, it supports the idea that this program didn’t improve those things in the short term.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

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