Thyroid hormones which causes the thyroid to enlarge (the resulting medical condition is called "endemic colloid goitre"; see goitre). This has the effect of increasing the thyroid's ability to trap more iodide, compensating for the iodine deficiency and allowing it to produce adequate amounts of thyroid hormone. Most of the thyroid hormone circulating in the blood is bound to "transport protein"s. Only a very small fraction of the circulating hormone is free (unbound) and biologically active, hence measuring concentrations of free thyroid hormones is of great diagnostic value. When thyroid hormone is bound, it is not active, so the amount of free
Latent iron deficiency previous conditions, the frequency can change from 11% in male athletes (Poland) to 44.7% in children less than 1 year old (China): Frequency of LID in different countries and populations: Latent iron deficiency Latent iron deficiency (LID), also called iron-deficient erythropoiesis, is a medical condition in which there is evidence of iron deficiency without anemia (normal hemoglobin level). It is important to assess this condition because it is accepted that individuals with latent iron deficiency will develop iron-deficiency anemia in the weeks or months following diagnoses of LID if they are not treated with iron supplementation. In addition, there is