Spring is here, so say birds, flowers, sunshine. Yet you sit depressed, wondering what all the fuss is about. Depression is no joke. It can have disastrous effects on physical as well as mental health. Live Science says a new study says depression is linked to Parkinson's Disease. Clinically depressed people are 60 percent more likely to develop Parkinson's disease later.Depression linked to Parkinson's disease: Natural mood lifters to beat the blues - Grand Rapids News | Examiner.com