Low Vitamin D May Raise The Risk Of Bladder Cancer

Low Vitamin D May Raise Risk Of Bladder Cancer

A review of seven research studies suggests a vitamin D deficiency might increase the risk of bladder cancer.

The review was presented at the Society for Endocrinology annual conference. Though further clinical studies are needed to confirm the findings, the study adds to a growing body of evidence on the importance of maintaining adequate vitamin D levels.

Vitamin D, which the body produces through exposure to sunshine, helps the body control calcium and phosphate levels. Vitamin D can also come from from food sources such as fatty fish and egg yolks.

Previous studies have linked vitamin D deficiency with a host of health problems including cardiovascular disease, cognitive impairment, autoimmune conditions, and cancer. In countries with low levels of sunlight, it is difficult to obtain enough vitamin D from food alone.

In this work, researchers from the University of Warwick and University Hospital Coventry and Warwickshire investigated the link between vitamin D and bladder cancer risk. They reviewed seven studies on the topic, which ranged from having 112 to 1,125 participants each.

Five out of the seven studies linked low vitamin D levels to an increased risk of bladder cancer.

In a separate experiment, the researchers then looked at the cells that line the bladder, known as transitional epithelial cells, and found that these cells are able to activate and respond to vitamin D, which in turn can stimulate an immune response.

According to Rosemary Bland, lead author of the study, this is important because the immune system may have a role in cancer prevention by identifying abnormal cells before they develop into cancer.

“More clinical studies are required to test this association, but our work suggests that low levels of vitamin D in the blood may prevent the cells within the bladder from stimulating an adequate response to abnormal cells,” says Bland. “As vitamin D is cheap and safe, its potential use in cancer prevention is exciting and could potentially impact on the lives of many people.”

Source: University of Warwick

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