The actual results of stem cell research will never be known. Any negative outcomes such as enhanced tumor generation will be hushed up for the sake of progress. Just like Nazi Germany
Enhanced tumor generation is a hallmark of embryonic "cures", not that there are any yet.
FReepers can rejoice at this unalloyed good news from the UK.
" Any negative outcomes such as enhanced tumor generation will be hushed up for the sake of progress"
there are plenty of folks who would GLADLY trade increased tumor risk for a chance to end back pain, though i think an issue is going to be folks who had/have a damaged/torn disc but now have actual nerve damage from years of irritant chemicals leaking from the disc onto the adjacent nerve roots.
I believe you are mistaking this for embryonic stem cells. These stem cells are taken from the person's own bone marrow.
These stem cells do not involve embryos, sperm or egg. This there is no morality issues. Also, the tumor risk for using your own stem cells is very low or nonexistant.
There has never been a successful treatment using embryonic stem cells. Hopefully there never will be.