Hundreds of medical institutions around the world claim that stem cell therapy can repair damaged tissue cells in multiple sclerosis patients  Experts point out that these agencies advertise directly to patients that they can cure diseases when there is actually no evidence that they work or cause harm  In this case, dealing with advertising is necessary, and certain types of stem cell transplants, such as those using blood or skin stem cells, have been approved by oversight agencies after extensive clinical trials have been shown to treat certain types of cancer and to allow burn patients to undergo skin grafts
While stem cell therapies are promising, many potential stem cell therapies are still in the early stages of development, have yet to be approved by regulators, and require rigorous clinical trials and regulatory procedures to determine whether they are safe and effective, experts said
Developing cell and tissue therapies remains a huge challenge