It could be a medical breakthrough for those with Parkinson's Disease. Researchers at the Cedars - Sinai Medical Center in Los Angeles say they were able to clear up the trembling and rigid muscles of a Parkinson's patient by treating the man with a transplant of his own brain cells.
Dopamine is a key chemical in the brain which acts as a message carrier for movement. Parkinson's is caused when brain cells that produce Dopamine die off, so doctors removed some brain cells from the patient, grew them in a lab until they had a cluster producing Dopamine, then, injected the cells back into the patient's brain. It worked. The trembling stopped. That's just one patient, but the FDA was impressed enough to give the okay to try it on many more patients.