A vast review of studies on Vitamin D has concluded that people with low levels of the vitamin had a 35 percent increased risk of death from heart disease, a 14 percent higher risk of death from cancer, and a greater risk of death from all causes as well.
The authors of this review, who came from a wide range of European and US universities, also looked at the usefulness of supplements, and found that there was no benefit from taking Vitamin D2. However, when they studied middle-aged and older adults who took Vitamin D3, they found an 11% reduction in risk of death from all causes. They also estimated that up to two-thirds of the people in Europe and the US are deficient in Vitamin D, and they calculated that about 13% of all deaths in the US, and about 9% of all deaths in Europe, are linked to low Vitamin D levels.
NYBC’s comment: This review suggests that it is crucial to supplement with Vitamin D3—-which is the type of Vitamin D stocked by NYBC. Older forms of supplementation, such as Vitamin D2-fortified milk, may not have benefit, according to this research. Secondly, though some have argued that low Vitamin D may simply be a side effect of disease processes that can’t be reversed by supplementing, we believe that this study also offers evidence that, especially when people are known to be deficient in Vitamin D (as is often the case in older populations, or among HIV+ people), supplementing with D3 has the potential to reduce disease risks, and indeed may reduce the overall risk of mortality.
See NYBC’s catalog for more detailed recommendations on Vitamin D3 supplementation:
Chowdhury, R et al. Vitamin D and risk of cause specific death: systematic review and meta-analysis of observational cohort and randomised intervention studies. BMJ April 2014; 348 doi: http://dx.doi.org/10.1136/bmj.g1903