RESUMEN
Conflicting results on the association between serum retinol level and bone mineral density [BMD] have been published. Thyroid hormones are essential for skeletal development and have direct effect on bone formation and resorption. Bone has one of the highest concentrations of zinc of all tissues, and has been shown to release zinc during deficiency for soft tissue metabolism. The objective of this study was to assess the relation between plasma levels of retinol, thyroid stimulating hormone [TSH] and zinc and BMD of Egyptian adolescents and adults. The study was a part of a cross sectional national survey conducted by National Nutrition Institute. The sample was a multistage stratified random. Target individuals were classified into two age groups [10-