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A study from ETH Zurich shows that premature aging disrupts bone structure and osteocyte networks in an age- and sex-dependent manner. Using the PolgA mouse model, researchers found significant declines in bone density, osteocyte morphology, and lacuno-canalicular connectivity by 40 weeks of age. Male mice exhibited more severe deterioration. Advanced imaging and computational analysis confirmed the damage. The findings position PolgA mice as a valuable model for studying cellular mechanisms underlying age-related bone loss.