June 2, 2026
Vitamin D and Cancer Risk: Disappointment is usually associated with studies examining the use of supplemental vitamins or minerals to decrease the risk of getting cancer. Do vitamin C or vitamin E provide a risk reduction? Nope. A systemic examination of 38 studies showed no value in cancer risk reduction. But what about the new star on the block, vitamin D? Let’s take a look.
Vitamin D deficiency or insufficiency is widespread and may contribute to falls, bone fractures, or bone loss in older adults. Nevertheless, it is not standard to routinely check blood levels of vitamin D for most individuals.
If you have a low blood level of vitamin D, you may be at a higher risk for several cancer types. For example, there appears to be a link between vitamin D deficiency and breast cancer. A 2017 review found that most studies demonstrate an inverse relationship between vitamin D levels and breast cancer: Vitamin D deficiency is associated with a higher risk of breast cancer.
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