Regenerative medicine some research has been done in other areas. Any such potential beyond blood and immunological uses is limited by the fact that cord cells are hematopoietic stem cells (which can differentiate only into blood cells), and not pluripotent stem cells (such as embryonic stem cells, which can differentiate into any type of tissue). Cord blood has been studied as a treatment for diabetes. However, apart from blood disorders, the use of cord blood for other diseases is not a routine clinical modality and remains a major challenge for the stem cell community. Along with cord blood, Wharton's jelly and the
Treatment of mental disorders Benjamin Rush (1746–1813) was considered the Father of American Psychiatry for his many works and studies in the mental health field. He tried to classify different types of mental disorders, he theorized about their causes, and tried to find possible cures for them. Rush believed that mental disorders were caused by poor blood circulation, though he was wrong. He also described Savant Syndrome and had an approach to addictions. Other important early psychiatrists include George Parkman, Oliver Wendell Holmes, Sr., George Zeller, Carl Jung, Leo Kanner, and Peter Breggin. George Parkman (1790–1849) got his medical degree at the University of