Vitamin D is often discussed for bone health—but the research covered in this video reveals a much bigger role. Dr. Mark Stengler walks through a randomized clinical trial published in Nutrition and Cancer showing that women with adequate vitamin D levels had dramatically higher complete response rates to chemotherapy.
If you or a loved one is navigating a breast cancer journey, this video explains why vitamin D testing matters, how it may support conventional treatment, and what optimal blood levels actually look like. This is practical, research-driven insight that empowers better conversations with your healthcare team—and could make a meaningful difference in outcomes.
CHAPTERS
00:00 Vitamin D and Breast Cancer: What the Research Shows
00:36 Inside the Clinical Trial on Vitamin D and Chemotherapy
01:34 Vitamin D Deficiency and Cancer Outcomes
02:17 Study Results: Higher Response Rates with Vitamin D
02:52 How Vitamin D Fights Cancer Cells
03:17 Vitamin D as a Chemotherapy Booster
04:08 Why Testing and Supplementing Vitamin D Matters
05:19 Ideal Blood Levels and Dosage Recommendations
05:44 The Role of Vitamin K2 with Vitamin D
06:14 Why Vitamin D Deficiency Is Common in Cancer Patients
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