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Sam's News β€” health β€” 2026-08-29

Diet & Metabolism

7.5 Ketogenic diet reduces liver fat by 67% in clinical trial

A ketogenic diet reduced liver fat by 67% in people with obesity and fatty liver disease, significantly outperforming Mediterranean (45% reduction) and low-fat diets in a clinical trial. All three groups lost approximately 10% of body weight over four to five months, with about half of ketogenic participants no longer meeting prediabetes criteria.

  • 67% liver fat reduction on ketogenic diet vs. 45% on Mediterranean and low-fat diets
  • Ketogenic diet: 4% carbs, 73% fat; Mediterranean: 50% carbs, 35% fat; Low-fat: 70% carbs, 15% fat
  • All groups achieved ~10% body weight loss over 4–5 months
  • ~50% of ketogenic group reversed prediabetes status
  • Published August 27, 2026, in Cell Metabolism; led by Samuel Klein at Washington University

Sources: ScienceDaily AI Web Searched, ScienceDaily β€” Health RSS, ScienceDaily β€” Fitness RSS, ScienceDaily β€” Nutrition RSS

Health

7 Sleep micro-awakenings linked to early Alzheimer's risk in healthy adults

Researchers found that frequent micro-awakenings during sleep correlate with higher genetic risk for Alzheimer's in middle-aged adults, potentially serving as an early warning signal years before symptoms appear. The study of over 500 healthy adults suggests sleep measurements could help identify vulnerable individuals, though genetic risk scores remain low and cannot predict individual outcomes.

  • Study included 500+ healthy adults aged 18–69
  • Micro-awakenings linked to higher polygenic risk scores in ages 50–69, not younger adults
  • Research published in journal Sleep
  • Polygenic scores are low and don't predict individual disease development

Sources: ScienceDaily AI Web Searched, ScienceDaily β€” Health RSS

7 Researchers identify protein brake blocking nerve repair in spinal injuries

Scientists identified the AHR protein as a molecular brake that suppresses nerve regeneration after spinal and peripheral nerve injuries. Blocking AHR in mouse models enhanced axon regrowth and improved motor recovery, suggesting a therapeutic strategy to shift injured neurons from protection toward active repair.

  • AHR protein inhibits nerve fiber regeneration in mouse models
  • Blocking AHR increased axon growth and restored movement and sensation
  • Active AHR protects neurons but suppresses growth protein production
  • Study published in Nature journal
  • HIF-1Ξ± factor involved in regeneration pathway

Sources: ScienceDaily AI Web Searched, ScienceDaily β€” Health RSS

6 Novartis Anti-Inflammatory Drug Shows Promise for Heart Health

A newly acquired Novartis drug demonstrated inflammation reduction, with ongoing trials to determine if it can improve cardiac outcomes.

Sources: STAT News RSS

Health Risk

7 Long-term melatonin use linked to 90% higher heart failure risk

A large preliminary study found chronic insomnia patients using melatonin long-term had approximately 90% higher risk of developing heart failure over five years. The findings raise questions about the long-term safety of the over-the-counter supplement, which lacks FDA regulation for strength and purity.

  • 90% elevated heart failure risk over 5 years in chronic melatonin users with insomnia
  • Associations also found with heart failure hospitalization and all-cause mortality
  • Data from TriNetX Global Research Network covering electronic health records
  • Study does not establish causation
  • OTC melatonin supplements lack FDA regulation for potency consistency

Sources: ScienceDaily AI Web Searched, ScienceDaily β€” Health RSS, ScienceDaily β€” Nutrition RSS

Longevity Research

6.5 Dog aging patterns mirror human longevity indicators

Research from the Dog Aging Project found that metabolic markers in dogs' blood correlate with lifespan in remarkably similar ways to those in humans.

Sources: ScienceDaily RSS, ScienceDaily β€” Health RSS

Health Regulation

5.5 FDA clears Juul updated vaping device with age-verification technology

The FDA has approved an updated version of Juul's e-cigarette that includes optional age-gating technology to prevent youth access.

Sources: STAT News RSS

Health Policy

5.5 Psychiatrists warn high-profile mental illness case may deter treatment of mothers with psychiatric conditions

Reproductive and forensic psychiatrists express concern that the Lindsay Clancy case may cause psychiatric professionals to become more reluctant to treat mothers suffering from mental illness.

Sources: STAT News RSS

Health Tech

5.5 Artificial intelligence applications in medicine: opportunities and risks

Overview article examines the potential benefits and risks of applying artificial intelligence to medical practice and patient care.

Sources: BBN Times RSS