People with anxiety have twice the risk of developing Parkinson’s disease compared with their non-anxious peers, according to a large new study in the United Kingdom. Researchers from University College London (UCL) used data for nearly 988,000 patients ages 50 and older from 2008 to 2018 to identify how anxiety affects Parkinson’s risk while accounting for other known factors such as age, sex, social isolation, severe mental illness, dementia, head trauma, and lifestyle. They found that patients who were diagnosed with anxiety for the first time as older adults were twice as likely to go on t…