Scientists reveal how seven days of fasting transforms the human body
Scientists from Queen Mary University of London found that a seven-day water-only fast triggers significant molecular changes in the human body, most notably after the third day. The study tracked around 3,000 proteins in blood samples and observed widespread shifts affecting metabolism, the brain, and the immune system. These findings suggest the body enters a distinct biological state during prolonged fasting that may offer health benefits beyond weight loss.
- ▪The body switches from burning glucose to fat within the first two to three days of fasting.
- ▪Major changes in protein activity across the body were not observed until after about three days without food.
- ▪Over one third of the measured proteins showed significant changes during the fast, including those linked to the extracellular matrix and brain neurons.
- ▪Participants lost an average of 5.7 kilograms, with most lean tissue regained after refeeding but much of the fat loss maintained.
- ▪The protein changes were highly consistent across participants, indicating a coordinated biological response to prolonged fasting.
ScienceDaily files mainly under science. We currently carry 88 of its stories.
Story provenance
Source · retrieval · rights · ranking — open for full record
inspect →
Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | ScienceDaily |
| Canonical URL | https://www.sciencedaily.com/releases/2026/05/260517030404.htm |
| Publication time | Sun, 17 May 2026 08:38:40 EDT |
| Retrieval time | 2026-05-17T13:02:13.089Z |
| Last seen | 2026-05-17T13:02:13.089Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | Ivg6kYEV_cML |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Science News from research organizations Scientists reveal how seven days of fasting transforms the human body Date: May 17, 2026 Source: Queen Mary University of London Summary: Scientists have discovered that the human body undergoes a dramatic internal transformation during extended fasting, with major changes appearing only after about three days without food. In a seven-day water-only fasting study, researchers tracked thousands of proteins in the blood and found widespread shifts affecting organs throughout the body — including the brain. While the body quickly switches from burning glucose to fat, the most intriguing biological changes linked to potential health benefits didn’t emerge until later in the fast.
…
Excerpt limited to ~120 words for fair-use compliance. The full article is at ScienceDaily.
Discussion
0 commentsMore from ScienceDaily
