Research
Micronutrients & recovery
Higher serum 25(OH)D levels (>=32 ng/ml) are associated with a lower risk of colorectal cancer.
Maintaining Vitamin D levels above 32 ng/ml may be associated with a significantly lower risk of colorectal cancer, according to meta-analyses of observational studies.
ModerateSupportsMEDIUM confidence
Meta-analysis of studies addressing the association between 25(OH)D levels and colorectal cancers showed that individuals with serum 25(OH)D levels >=32 ng/ml had a 50% lower incidence of colorectal cancer than those with relatively low levels (<12 ng/ml).
Why this rating
Based on meta-analyses of observational studies; RCTs have shown mixed results (e.g., WHI trial).
Source
Vitamin D and Health: Perspectives From Mice and Man
Roger Bouillon et al. · Journal of Bone and Mineral Research · 2008
narrative_reviewCited 238×
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