A new gene therapy could help reduce some symptoms of Parkinson's disease.
Parkinson's patients commonly suffer from tremors, limb stiffness and balance problems due to a lack of the chemical dopamine in the brain.
But, a report in the "Lancet" says a new treatment injects an inactive virus into patients that prompts the brain cells to make dopamine. And so far, that has improved the motor function in all the patients in a clinical study.
Researchers are hopeful this therapy could someday become routine treatment for Parkinson's disease.