{
  "id": 5181204,
  "title": "When we eat helps set the liver's metabolic rhythms",
  "url": "https://urgent.news/2026/09/02/when-we-eat-helps-set-the-livers-metabolic-rhythms",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-02T22:00:05.000Z",
  "source": {
    "name": "Medical Xpress",
    "slug": "medical-xpress",
    "url": "https://medicalxpress.com/news/2026-09-liver-metabolic-rhythms.html"
  },
  "original_language": "en",
  "account": "This article explores the influence of meal timing on the liver's metabolic rhythms. Researchers have discovered that when and how we eat can impact the liver's handling of nutrients. The liver, a key metabolic organ, follows daily rhythms that coordinate nutrient processing, storage, and use. These rhythms are regulated by the molecular circadian clock in body cells, but also by the timing of food intake.\n\nIn a study published in Cell Reports, researchers identified a mitochondrial enzyme called ACSF3 as a potential link between feeding time and the organization of liver metabolism. The circadian clock, often seen as the body's timekeeper, is crucial in determining when nutrients are available. The liver, in particular, adjusts its handling of carbohydrates, fats, and other nutrients based on the body's needs throughout the day.\n\nThe researchers found that ACSF3 levels in the liver fluctuated throughout the day, responding to changes in feeding times. By manipulating the feeding schedules of mice, the researchers observed that the daily rhythm of ACSF3 also shifted. This suggests that the timing of food intake can influence molecular processes within the liver and mitochondria.\n\nFurther experiments showed that reducing ACSF3 expression in the liver affected several metabolic pathways, particularly lipid metabolism. This led to changes in mitochondrial fatty acid oxidation, increased lipid synthesis, and alterations in the daily rhythms of liver lipids. Similar effects were observed in glucose metabolism, including changes in hepatic glucose regulation and insulin signaling.\n\nThe study also revealed that reducing ACSF3 levels increased autophagy, a cellular recycling process that breaks down and removes damaged or unnecessary components. The researchers are unsure of the exact reason behind this increase, but it may be a compensatory response to the metabolic disturbances caused by reduced ACSF3. This finding also highlights the potential link between mitochondrial metabolism and cellular maintenance.\n\nOverall, the findings suggest that the timing of food intake matters at the molecular level in mice, potentially affecting metabolism. While these results cannot be directly applied to humans, they provide a potential molecular explanation for how feeding rhythms and the circadian system may interact to influence metabolic processes. Further research is needed to determine whether similar mechanisms operate in humans and whether the timing of meals can be optimized for better health.",
  "summary": "When we think about metabolism, we usually ask, \"What did I eat? How much sugar, fat or protein was in the meal?\" But through our research, we have become interested in another question: \"When did I eat it?\" This matters because metabolism does not work at the same pace throughout the day.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}