Hypocholesterolemia is a biochemical abnormality that often does not have much interest for clinicians. However its frequency varies from 2 to 5% according to the studied populations and can reveal a severe disease (cancer, sareopenia, malabsorption...). We report the observation of Miss HY, 17 year old, in whom the biological association of a hypocholesterolemie state with ferriprive anaemia revealed a celiac disease. Diagnosis was confirmed by the anatomopathologic examination and analysis of both anti-gliadine and anti-endomysium antibodies. The introduction of a strict diet without gluten allowed normalization of the biological parameters and the improvement of clinical symptomatology.