Steroids are hormones that occur naturally in the body. Steroid medicines are man-made and are similar to the natural hormones made in the body. İstanbulİstanbulAnkaraAnkaraİzmirİzmirBursaBursaSakaryaSakaryaAdanaAdanaAntalyaAntalyaKocaeliKocaeliKonyaTekirdağTekirdağBalıkesirEskişehirEskişehirKonyaTrabzonTrabzonBalıkesirGaziantepGaziantepMersinMersin Sometimes a very blocked or runny n... https://www.pdc.edu/?URL=https://tr.wikipedia.org/wiki/Vitamin