{
  "id": 45879,
  "title": "Eating less protein could slow aging, major review finds",
  "url": "https://urgent.news/2026/08/02/eating-less-protein-could-slow-aging-major-review-finds-45879",
  "topic": "science",
  "section": "Science",
  "published": "2026-08-02T04:52:01.000Z",
  "source": {
    "name": "ScienceDaily",
    "slug": "sciencedaily",
    "url": "https://www.sciencedaily.com/releases/2026/08/260801042811.htm"
  },
  "original_language": "en",
  "account": "A recent review examining the impact of protein restriction on aging suggests that consuming less protein may lead to a longer life for many people, according to scientists at the University of Wisconsin-Madison. Published in the Cell Press journal Cell Press Blue, the study analyzed over 350 research papers to explore the relationship between protein, metabolism, and aging. While protein is crucial for muscle growth and exercise performance in active individuals, the researchers emphasize that many sedentary people may be consuming excess protein, which could have negative health effects. Previous studies on flies and rodents have shown that reducing protein intake while maintaining overall calorie levels can extend lifespan. Similarly, human clinical trials have found that lowering protein intake can result in weight loss, improved fasting blood sugar levels, and other health benefits. The review identified several biological mechanisms that may explain why protein restriction could improve health and promote longevity. One key factor is the hormone fibroblast growth factor 21 (FGF21), which increases when protein intake is reduced. FGF21 can boost energy expenditure, enhance blood sugar regulation, and decrease inflammation. Mice with higher FGF21 levels have been observed to live longer, particularly male mice. In humans, lower protein intake also raises FGF21 levels. The review further highlights the importance of specific amino acids, such as methionine, isoleucine, and valine, which may activate biological pathways that promote growth and increase the risk of obesity, inflammation, and other aging-related conditions when consumed excessively. While protein-fortified foods may benefit certain groups, such as pregnant women and some older adults, the review suggests that for many sedentary adults, high protein intake may not provide the expected health benefits. The researchers emphasize the need for personalized protein recommendations based on both age and physical activity levels to maximize health benefits and minimize potential risks.",
  "summary": "A sweeping review of more than 350 studies suggests that the protein boom may be overselling what many people actually need. Eating less protein appears to improve metabolism, reduce inflammation and cellular damage, and activate pathways linked to healthier aging and longer life.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "ScienceDaily Health",
        "title": "Eating less protein could slow aging, major review finds",
        "url": "https://urgent.news/2026/08/02/eating-less-protein-could-slow-aging-major-review-finds",
        "published": "2026-08-02T04:52:01.000Z"
      }
    ]
  },
  "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."
}