Researchers recently reviewed a variety of studies on vitamin D and bladder cancer to find that higher levels of vitamin D may protect against bladder cancer.
Bladder cancer is a relatively rare cancer in which most cases occur in the cells that form the inner lining of the bladder. In the United States in 2014, there was an estimated 74,700 new diagnoses and 15,600 deaths from bladder cancer.
In a new study, researchers from China reviewed past research on vitamin D and bladder cancer to obtain a wider understanding of the role that vitamin D might play in this form of cancer.
From all the studies reviewed, the researchers analyzed data from 89,610 participants and 2,238 cases of bladder cancer.
They found that high vitamin D levels were significantly related to a 25% decreased risk of bladder cancer. This statistic did not change when removing any single study from the analysis.
“The findings from the meta-analysis suggest an obvious protective effect of vitamin D against bladder cancer,” the researchers concluded.
“Individuals with higher serum [vitamin D] levels suffer from less risk of subsequent bladder cancer.”