After multivitamins, vitamin D supplements are the second most prescribed vitamin in the country. A JAMA Internal Medicine published study has indicated that vitamin D is not effective in lowering blood pressure.

In the study, the researchers collected blood pressure data from 46 different clinical trials having more than 4,541 participants that used vitamin D supplements for at least a month. The researchers did not find any effect from vitamin D in the systolic and diastolic blood pressure.

The researchers said there is a link between low levels of vitamin D and heart diseases. As per the National Institutes of Health (NIH), there is no sufficient proof to find out that how levels of vitamin D could increase risk or protect against cancer.

The NIH also said that too much vitamin D in the blood is quite negative for the body. It can cause nausea, constipation and even damage to the kidneys. Earlier studies have also unveiled that low levels of vitamin D could have more chance to develop Alzheimer’s disease and die prematurely of cancer or other causes.

Therefore, it can be said that the vitamin D’s role is not clear. As per data, 75% of Caucasians and 97% of African Americans have low level of vitamin D. This factor has made doctors to reevaluate what is normal.

The researchers have asked people to ask their doctors who prescribe them vitamin D for the data that shows it is benefitting them.

“The results of this analysis do not support the use of vitamin D or its analogues as an individual patient treatment for hypertension or as a population-level intervention to lower BP”, affirmed the study researchers.

Dr. Robert Rosenson, director of the Cardiometabolic Unit at The Mount Sinai Hospital in New York City, said there is a need to assess the health claims with regard to vitamins and nutritional supplements.