The Claim

A three-day water-only fast alters plasma proteomic and metabolomic profiles in healthy adults, including changes in proteins and metabolites linked to inflammation, oxidative stress, and cellular stress response pathways.

Source: Investigating the Impact of Glycogen-Depleting Exercise Combined with Prolonged Fasting on Autophagy and Cellular Health in Humans: A Randomised Controlled Crossover Trial

What the research says

Supports is higher

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

Supports
62score
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

A three-day water-only fast changes the levels of proteins and metabolites in the blood of healthy adults, specifically those involved in inflammation, oxidative stress, and cellular stress response pathways.

See the scientific wording

A three-day water-only fast alters plasma proteomic and metabolomic profiles in healthy adults, including changes in proteins and metabolites linked to inflammation, oxidative stress, and cellular stress response pathways.

Why this might work

When a person stops eating for three days, the body runs out of sugar stores and starts burning fat for energy. This produces ketones, which lower insulin and IGF-1 levels. Lower IGF-1 turns off a cellular growth signal called mTOR, which triggers the cleanup of damaged cell parts through autophagy. At the same time, ketones reduce oxidative stress and block inflammatory pathways, changing the proteins and chemicals in the blood to reflect a shift from growth to repair.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Investigating the Impact of Glycogen-Depleting Exercise Combined with Prolonged Fasting on Autophagy and Cellular Health in Humans: A Randomised Controlled Crossover Trial

    After three days without food, the body changes its blood chemicals in ways that help clean up damaged cells and reduce inflammation—like turning on a repair mode. This study shows those exact changes happened.

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.