What is the main idea of the news item? [originaltext] In a six-year study of

In a six-year study of just over 136,000 nurses and health professionals, researchers at Harvard University School of Public Health in Massachusetts found that people who take ibuprofen regularly for headache or other pain reduced their risk of developing Parkinson’s disease by nearly 40 percent.
    Taking one or two pills of ibuprofen two or more times per week was considered regular use. Other non-prescription pain relievers, including aspirin and acetaminophen, did not show a similar protective benefit.
    Researcher Alberto Ascheiro says ibuprofen appears to affect a neural pathway that has been implicated in the development of Parkinson’s.
    At this point, Ascheiro says, experts do NOT recommend that people start taking ibuprofen to prevent Parkinson’s, which typically strikes people 65 years of age and older.
    On the downside, ibuprofen can cause stomach, kidney, liver and urological problems if not used carefully. Ascheiro says researchers will now be studying whether the medication benefits those who have been diagnosed with the disease.