Healthy vitamin D levels may lead to better memory and depression-free life in patients suffering from Parkinson's disease (PD). A new study exploring vitamin D levels in patients with Parkinson's disease opens up the possibility of a new avenue of early intervention that may delay or prevent the onset of cognitive impairment and depression. 'Nearly 30 percent of people with PD suffer from cognitive impairment and dementia. Intervening in the development of dementia has the potential to improve morbidity and mortality in persons with PD' said Amie L. Peterson of Oregon Health and Sciences University in the US. The role
