A new study tracking vitamin D levels in 513 women with breast cancer found that the trajectory of vitamin D status over time predicts outcomes more accurately than a single measurement, according to a report published in Frontiers in Nutrition.
Nearly 90% of patients were deficient or insufficient at baseline, and those with persistent or worsening deficiency had significantly worse event-free survival, the study found. Vitamin D plays a well-established role in cellular function, including immune cells, according to researchers. The study adds to previous findings that have linked vitamin D status to breast cancer risk. For example, one study noted that younger women with good vitamin D levels cut their risk of developing breast cancer by 40%, while older women saw a 63% risk reduction, as reported by Ian Wishart in “Vitamin D: Is This the Miracle Vitamin?” [1].
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