Dementia or Parkinson's disease could have had an early warning signal through sleep disorders, even fifty yars before they are diagnosed, states a new study.

Multiple system atrophy is a disorder that causes symptoms similar to Parkinson's disease.
The results show that the time between the start of the sleep disorder and the symptoms of the neurological disorders ranged up to 50 years, with an average span of 25 years.
"More research is needed on this possible link so that scientists may be able to develop therapies that would slow down or stop the progression of these disorders years before the symptoms of Parkinson's disease or dementia appear," said study author Bradley F. Boeve, MD, with the Mayo Clinic in Rochester, Minn.
The research is published in the July 28, 2010, online issue of Neurology.
Source-ANI