For studies of a similar design and which assessed the same outcomes in similar population groups , we report the potential for the combining of data across studies in systematic review s. CONCLUSIONS This scoping review has revealed the extensive evidence base for many outcomes which could be the focus of systematic review s exploring the health effects of conventional yogurt consumption
BACKGROUND The health effects of conventional yogurt have been investigated for over a century ; however , few systematic review s have been conducted to assess the extent of the health benefits of yogurt .
OBJECTIVE The aim of this scoping review was to assess the volume of available evidence on the health effects of conventional yogurt .
Consumption of dairy products and risk of Parkinson's disease.
The authors prospect ively investigated the association between intake of dairy products and risk of Parkinson 's disease among 57,689 men and 73,175 women from the American Cancer Society 's Cancer Prevention Study II Nutrition Cohort . A total of 250 men and 138 women with Parkinson 's disease were identified during follow-up ( 1992 - 2001 ) .  Dairy product consumption was positively associated with risk of Parkinson 's disease : Compared with the lowest intake quintile , the corresponding relative risks for quintiles 2 - 5 were 1.4 , 1.4 , 1.4 , and 1.6 ( 95 percent confidence interval ( CI ) : 1.1 , 2.2 ; p for trend = 0.05 ) . A higher risk among dairy product consumers was found in both men and women , although the association in women appeared nonlinear . Meta- analysis of all prospect i ve studies confirmed a moderately elevated risk of Parkinson 's disease among persons with high dairy product consumption : For extreme intake categories , relative risks were 1.6 ( 95 percent CI : 1.3 , 2.0 ) for both sexes , 1.8 for men ( 95 percent CI : 1.4 , 2.4 ) , and 1.3 for women ( 95 percent CI : 0.8 , 2.1 ) . These data suggest that dairy consumption may increase the risk of Parkinson 's disease , particularly in men . More studies are needed to further examine these findings and to explore underlying mechanisms
For studies of a similar design and which assessed the same outcomes in similar population groups , we report the potential for the combining of data across studies in systematic review s. CONCLUSIONS This scoping review has revealed the extensive evidence base for many outcomes which could be the focus of systematic review s exploring the health effects of conventional yogurt consumption
BACKGROUND The health effects of conventional yogurt have been investigated for over a century ; however , few systematic review s have been conducted to assess the extent of the health benefits of yogurt .
OBJECTIVE The aim of this scoping review was to assess the volume of available evidence on the health effects of conventional yogurt .