Animal study · Supplements / medicine · 26 Aug 2026
Scientists may have found a shortcut to calorie restriction’s anti-aging benefits
Source: ScienceDaily
What the research found
Study. Yale School of Medicine researchers writing in Nature Aging analyzed plasma from 42 people in the NIH CALERIE trial who cut calories by about 11–14% for two years. Complement component 3 (C3) fell after restriction; fat-tissue macrophages appeared to be a source as C3 rose with age in mice. Blocking C3 activation reduced age-related inflammation in mice. Weight-loss amount did not track with the C3 drop, so the authors argue some calorie-restriction biology may be separable from losing pounds. Human trial data here are protein changes, not proven extra years of life. Experimental C3 blockers are research tools, not a diet-free longevity pill.
Evidence level: Animal study. Results in animals or cells often don't carry over to people.
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