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We study how rotation impacts the evolutionary properties of classical Cepheids. We examine whether rotation can offer a plausible explanation for the mass discrepancy problem when it is included in the evolutionary code using the fully diffusive approximation for rotationally induced mixing processes. We find that rotation barely influences the appearance and luminosity levels of the blue loops. While l","authors_text":"R. Singh Rathour, R. Smolec, V. Hocd\\'e","cross_cats":[],"headline":"Rotation produces only small luminosity increases in Cepheid blue loops","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-05-13T21:27:59Z","title":"Toward a Comprehensive Grid of Cepheid Models with MESA. IV. 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