Elevated blood levels of the liver enzyme gamma-glutamyltransferase (GGT), a marker for liver disease, was found to be associated with an increased risk of Parkinson’s disease in Korean women and a lower risk in Korean men, a large-scale study found.

These gender-specific associations held after adjusting for factors that influence GGT levels, such as age, income status, body mass index (BMI), smoking habits, and alcohol consumption.

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https://parkinsonsnewstoday.com/2020/01/31/ggt-liver-enzyme-levels-linked-to-sex-specific-parkinsons-risk-in-korean-study/

Source: Parkinsons News Today