title: Too much vitamin A raises hip-fracture risk, except in women taking HRT.
mesh_terms: D015519:Bone Density; D015914:Estrogen Replacement Therapy; D005260:Female; D006620:Hip Fractures / Q000209:etiology* / Q000517:prevention & control; D006801:Humans; D012307:Risk Factors; D014481:United States; D014801:Vitamin A / Q000008:administration & dosage* / Q000009:adverse effects
chemical_list: D014801:Vitamin A