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This sex difference is attenuated in obesity, which reduces overall glucose oxidation. These findings reveal sex-specific regulation of postprandial glucose metabolism not captured by conventional OGTT metrics and highlight breath testing as a sensitive, noninvasive approach for assessing glucose metabolism outside the laboratory.\n                  <\/jats:p>","DOI":"10.1152\/ajpendo.00576.2025","type":"journal-article","created":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T18:29:53Z","timestamp":1775154593000},"page":"E684-E693","update-policy":"https:\/\/doi.org\/10.1152\/aps-crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Sex differences in exogenous glucose oxidation are attenuated by obesity: insights from a [U-\n                    <sup>13<\/sup>\n                    C\n                    <sub>6<\/sub>\n                    ]glucose home breath 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