When patients are diagnosed with Parkinson's disease (Pd), they are faced with possibly the most important decision of their life. Do they start taking medication which, unbeknown to them, has not yet been proved capable of reversing the Pd, but of only hiding a small number of its symptoms, albeit temporarily? If they do decide to take medication, do they know and understand the serious side effects of that medication? Or do they start doing regular serious exercise; manage their stress levels; adopt a positive attitude and stimulate their brains? This is a very serious decision!