Whether a supplement used by athletes to boost energy levels and build muscle can slow progression of Parkinson’s disease is the focus of a North American study.Creatine, under study for a number of neurological and neuromuscular diseases such as Lou Gehrig’s and muscular dystrophy, may help Parkinson’s patients by giving an energy boost to dying cells, says Dr. Kapil D. Sethi, neurologist and director of the Movement Disorders Program at the Medical College of Georgia.>>> Discuss This Story