Friday, August 20, 2010

Vitamin D Deficiency Linked to Risk of Parkinson's Disease

Individuals with the lowest vitamin D levels are at increased risk of Parkinson's Disease, according to a new long-term research study noted by USANA Health Sciences.

Participants included 3,173 Finnish men and women aged 50 - 79 determined to be free of Parkinson's disease at the beginning of the study.  Vitamin D samples were taken at the beginning of the study and frozen.  During 29 years of follow-up, 50 documented cases of Parkinson's disease were recorded among study participants.


Serum vitamin D levels were determined from the frozen samples taken at the beginning of the study.  The relationship between serum vitamin D concentration and Parkinson's disease incidence was then calculated.


Participants with the highest levels of vitamin D (more than 50 nmol/L) had a 67 percent lower risk of developing Parkinson's disease than those with the lowest vitamin D levels (less than 25 nmol/L)  The difference was validated after adjustment for sex, age, marital status, education, alcohol consumption, leisure-time physical activity, smoking, body mass index (BMI) and month of blood draw.

The results of the study are consistent with the suggestion that high vitamin D status provides protection against Parkinson's disease.  The scientists acknowledge that there may be other factors involved in the results, however, so further research is warranted.

Knekt P,et al. Serus Vitamin D and the Risk of Parkinson Disease 2010. Arch Neurol 67(7) 808-11

Deanna Waters   1-888-320-8250
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