Background Circulating vitamin C concentrations have been associated with several
cancers in observational studies, but little is known about the causal direction of the …

Epidemiological studies evaluating the association between the intake of vitamin C and lung
cancer risk have produced inconsistent results. We conducted a meta-analysis to assess the …

Based on the existing systematic reviews and meta-analyses, we conducted this umbrella
review aiming at evaluating the quality of evidence, validity and biases of the relationship …

Background & aims Vitamin C is an antioxidant with a potential role in the prevention of
digestive system cancers, but there is yet no consensus whether vitamin C has a causal role …

Background The association between vitamin E and cancer risk has been widely
investigated by observational studies, but the findings remain inconclusive. Here, we aimed …

Background: Vitamin C may influence cancer progression through its antioxidant properties.
However, the evidence from observational epidemiologic studies on vitamin C intake and …

We attempted to systematically determine the association between dietary intake of vitamin
C and risk of prostate cancer. PubMed and Embase were searched to obtain eligible studies …

Epidemiological studies suggest that higher serum 25-hydroxyvitamin D is associated with
lower risk for several cancers, including breast, prostate, colorectal, and lung cancers. To …

Objective To determine if circulating concentrations of vitamin D are causally associated with
risk of cancer. Design Mendelian randomisation study. Setting Large genetic epidemiology …

Background The relation between plasma vitamin C and risk of stroke remains unclear.
Although clinical trials showed no significant benefit of vitamin C supplementation in …