October has become synonymous with the color pink and Breast Cancer Awareness. The disease affects 2.3 million women worldwide. While less common, it also impacts men, with about 2,800 diagnosed each year in the U.S., according to the American Cancer Society.
Advances in detection and treatment have led to significant progress. Since 1989, the breast cancer death rate has dropped by 44%, resulting in nearly 518,000 averted deaths. Early detection remains critical to survival.
One recent study out of São Paulo State University published in Nutrition and Cancer involved 80 women over age 45. Researchers found that low-dose vitamin D supplements improved the effectiveness of chemotherapy in those being treated for breast cancer. After six months, 43% of the women taking vitamin D saw their tumors disappear, compared with 24% in the placebo group. All participants underwent neoadjuvant chemotherapy, a treatment used to shrink tumors before surgery.
The findings align with earlier research linking vitamin D levels to breast cancer risk. Some studies suggest higher vitamin D levels may reduce the likelihood of developing the disease, while others indicate it could slow tumor growth. Still, researchers caution that much more study is needed before drawing firm conclusions.
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