Stem cells are those cells which originate in all multi-cellular organisms. They were isolated in mice in 1981 and in humans in 1998. In mammals, there are two broad types of stem cells: embryonic stem cells, which are confined from the inner cell mass of blastocysts & adult stem cells, which are found in different tissues. Stem cell treatments are a type of cell therapy that introduces new cells into adult bodies for promising treatment of diabetes, cancer, neurological disorders and other medical conditions. Stem cells have been used to repair tissue damaged by age or disease. Currently it has appeared as a rapidly expanding field with the potential to address the worldwide organ shortage issue and comprises of tissue regeneration and organ replacement. In a creating developing life, stem cells can differentiate into all the particular cells ectoderm, endoderm and mesoderm additionally keep up the typical turnover of regenerative organs, such as blood, skin, or intestinal tissues.