出版社：Sociedad Chilena de Nutrición, Bromatología y Toxicología
其他摘要：Food consumption and therefore the nutritional status of micro- nutrients are influenced by various factors such as seasonality. This study aimed to determine the effect of seasonality on the nutritional status of Fe, Zn and Cu in adult subjects. A longitudi- nal study was conducted during the months of September 2005 and August 2006. Fifty subjects of both sexes belonging to the urban area of the city of Santiago de Chile were evaluated. Blood samples were drawn during the first week of each month; serum iron, copper and zinc, hemoglobin, mean cell volume, serum ferritin, zinc-protophorphyrin and ceruloplasmin were determi- ned. Serum copper and zinc levels showed significant seasonal variations but not serum iron. Mean cell volume, hemoglobin and ceruloplasmins were significantly lower during spring and summer while serum ferritin and zinc-protophorphyrin showed lower concentrations during autumn and winter. We conclude that during the spring and summer levels of serum iron, copper and zinc could be diminished by reduced food intake.
关键词：Iron; copper; zinc; seasonality; nutrition status
