Many Americans Curious, But Wary, About Gene Testing

TUESDAY, Oct. 2, 2018 -- Only a small percentage of Americans have had their DNA analyzed -- but many are tempted to try it, according to new research.

For the study, University of Michigan researchers surveyed nearly 1,000 adults aged 50 to 64. While curious about their ancestry or health risks, the majority said they fear they'll worry excessively if they learn they have genetic links to progressive diseases like macular degeneration, Alzheimer's or Parkinson's.

ADHD Tied to Raised Risk of Early Parkinson's

WEDNESDAY, Sept. 12, 2018 -- People with attention-deficit/hyperactivity disorder (ADHD) may be more than twice as likely to develop an early onset form of Parkinson's, new research warns.

What's more, among "those ADHD patients who had a record of being treated with amphetamine-like drugs -- especially Ritalin [methylphenidate] -- the risk dramatically increased, to between eight- to nine-fold," said senior study author Glen Hanson.

Thinning Retina Seen as Early Warning Sign for Parkinson's

THURSDAY, Aug. 16, 2018 -- Your eyes could provide early evidence that you're developing Parkinson's disease, a small study out of South Korea suggests.

People with early Parkinson's appear to experience a thinning of their retinas, which are the light-sensitive nerve cells that line the back of the eye, the researchers reported.