A team from the University of California San Diego School of Medicine recently published an article in PLOS ONE suggesting that increased levels of vitamin D in the blood may lower a woman’s risk of developing breast cancer.
Further, these researchers identified 60 nanograms of 25-hydroxycholcalciferol per every milliliter of blood plasma to be the threshold in which most positive results were seen. Women aged 55 years and over at or above this level exhibited one-fifth the risk of developing breast cancer compared to those with levels at or below 20 ng/mL. While previous studies have suggested a link between breast cancer and vitamin D, this research presents the strongest evidence of an association thus far.
Although this research correlates higher serum vitamin D levels to positive health outcomes, it is important to understand that extremely high levels of vitamin D can cause adverse effects. Symptoms such as nausea, constipation, weight loss, heart rhythm problems, and kidney damage have been linked to serum vitamin D levels at or above 125 ng/mL.
Read more about this research at: https://www.sciencedaily.com/releases/2018/06/180615154523.htm
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