{
  "id": 7680484,
  "title": "Scientists reversed biological age in older adults in just 4 weeks",
  "url": "https://urgent.news/2026/09/16/scientists-reversed-biological-age-in-older-adults-in-just-4-weeks",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-16T01:35:54.000Z",
  "source": {
    "name": "ScienceDaily",
    "slug": "sciencedaily",
    "url": "https://www.sciencedaily.com/releases/2026/09/260915100000.htm"
  },
  "original_language": "en",
  "account": "A study conducted at the University of Sydney suggests that older adults may be able to reverse some aspects of biological aging within just four weeks by altering their diet. The research, led by Dr. Caitlin Andrews, involved 104 participants aged 65 to 75 who were randomly assigned to one of four diets. All diets provided 14 percent of total energy from protein, with varying levels of dietary fat and animal-based protein. Two diets were omnivorous, while the other two were semi-vegetarian. Within these groups, participants followed either a high-fat, low-carbohydrate or low-fat, high-carbohydrate diet.\n\nThe findings, published in Aging Cell, indicate that the three diets with reduced dietary fat and/or animal-based protein showed reductions in the estimated biological age of participants' biomarker profiles. The strongest statistical evidence was observed in the semi-vegetarian high-carbohydrate group, who ate a diet containing 14 percent protein, 28-29 percent fat, and 53 percent carbohydrates. However, the researchers caution that the study is preliminary and that further research is needed to determine whether these changes are sustained and whether they lead to a lower risk of age-related diseases. Biological age, unlike chronological age, is an estimate of how old the body appears based on its health and physiological condition. The study's findings provide an early indication of the potential benefits of dietary changes in later life, but more research is needed to confirm these results.",
  "summary": "Older adults who changed the balance of fat, carbohydrates, and animal protein in their diets showed signs of reduced biological age after just four weeks. The strongest result appeared in participants eating an omnivorous, lower-fat, higher-carbohydrate diet.",
  "key_points": [
    "Older adults' biological age reversed in 4 weeks via diet changes",
    "Semi-vegetarian high-carb diet showed strongest results",
    "Study cautions further research needed for sustained effects"
  ],
  "editors_take": "This study suggests that simple dietary changes can reverse certain aspects of biological aging in older adults, potentially lowering their risk of age-related diseases, by altering biomarker profiles.",
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "ScienceDaily Health",
        "title": "Scientists reversed biological age in older adults in just 4 weeks",
        "url": "https://urgent.news/2026/09/16/scientists-reversed-biological-age-in-older-adults-in-just-4-weeks-7681231",
        "published": "2026-09-16T01:35:54.000Z"
      }
    ]
  },
  "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."
}