Your Daily Nutrition Science Briefing

Popular Weight-Loss Drugs Ozempic and Wegovy May Slow Biological Aging

• Researchers at the University of California - San Diego have found that semaglutide, the active ingredient in weight-loss medications Ozempic and Wegovy, slowed biological aging markers in adults with HIV, marking the first clinical evidence that the drug may influence human aging. This suggests that by calming inflammation and reducing excess fat, semaglutide could potentially postpone several molecular signs of aging, though further large-scale studies are needed to confirm these benefits in a broader population.

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• A Canadian study led by University of Toronto professor Harvey Anderson, published in *The Journal of Nutrition*, provides new evidence supporting the consumption of full-fat dairy. The 12-week study of 74 adults demonstrated that three daily servings of full-fat dairy could be incorporated into a diet without negatively affecting body weight, composition, energy metabolism, or blood lipid levels, and notably, blood pressure improved. This finding challenges traditional dietary guidelines that often recommend low-fat dairy, particularly benefiting older adults who may find full-fat options a nutrient-dense way to meet their needs.

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• New research published on July 13, 2026, indicates that even modest sleep loss can impact weight management, as participants who slept approximately 80 minutes less per night for six weeks experienced weight gain and increased inactive time. This highlights that realistic, mild sleep deprivation, common among many adults, has measurable consequences for body weight and activity levels.

  Sciencedaily