The Claim

Among Japanese adults with overweight or obesity, adherence to a weekly 1-day intermittent fasting regimen with meal replacements over 12 weeks was 79%, indicating high feasibility of this structured, app-supported approach in this population.

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 a 12-week study, 79% of Japanese adults with overweight or obesity followed a weekly one-day intermittent fasting plan using meal replacements, showing that this structured, app-supported approach was feasible for them.

See the scientific wording

Adherence to a weekly 1-day intermittent fasting regimen with meal replacements was 79% among Japanese adults with overweight or obesity over 12 weeks, indicating high feasibility of this structured, app-supported approach in this population.

Why this might work

Eating on a fixed schedule once a week with pre-planned meals reduces decision fatigue and stabilizes blood sugar, while app reminders reinforce daily habits, making it easier to stick to the plan without needing willpower.

Suggested 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 79% of people who tried a weekly fasting plan with pre-delivered meals and app reminders stuck with it for 12 weeks — which is exactly what the claim says. So yes, it’s practical for many adults with overweight.

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.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.