The literature is very poor when it comes to recent data on creatine use in humans that extends for more than a few weeks. Studies with large numbers of subjects, measures, and numerous parameters are also scarce. Some years ago, a large study was undertaken that involved 1,000 subjects with Parkinson's Disease taking creatine long-term. However, I can't find any results in the literature. Could anyone assist? This is quite astonishing when millions of people worldwide are consuming creatine for various reasons.