From GrassrootsHealth

Could Vitamin D Alone Have Prevented Over 300,000 Breast Cancer Cases this Year?

Greetings!

“1 in 8 women in the United States will be diagnosed with breast cancer in her lifetime. In 2025, an estimated 316,950 women and 2,800 men will be diagnosed with invasive breast cancer, and an additional 59,080 new cases of non-invasive (in situ) breast cancer will be diagnosed.”

Meanwhile, getting everyone’s vitamin D level up to at least 40-60 ng/ml, assuming an 80% reduced risk of incidence, is a safe and cost-effective intervention that could result in around 301,000 people who would be saved the trauma of breast cancer this year – both the disease itself and the horrific treatment.

RESEARCH SHOWS BREAST CANCER IS AMONG THE MOST PREVENTABLE CANCERS

Getting enough vitamin D, omega-3s, magnesium, selenium, and other nutrients can help reduce the risk of breast cancer and improve breast cancer outcomes.

While most focus on breast cancer awareness every October, GrassrootsHealth has always educated about the importance of breast cancer prevention with vitamin D (why GrassrootsHealth was founded) and other important nutrients. During this month, we are offering everyone

15% OFF HOME BLOOD SPOT TEST KIT ORDERS OF $100 OR MORE

PLUS Get a FREE Copy of Our Breast Cancer Research Summary Chart eBooklet and our Vitamin D eGuide

Use code BCP25

Hurry! This offer is available now until Friday, October 31st, 2025 at 11.59PM PST. Discount not available on T1D Prevention Test Kits.*

GET YOUR TEST KIT AND FREE eBOOKLET NOW!

THE POWER OF KNOWLEDGE – What could knowing your vitamin D level do for your breast cancer risk and survival?

There have been many studies demonstrating a lower risk of breast cancer diagnosis and death when women raise their vitamin D levels. The similar findings between all these studies emphasizes the importance of improving vitamin D status for reducing the risk of breast cancer and increasing chances of survival with diagnosis. Below are some of the key published findings on the topic of breast cancer and vitamin D for reducing the risk of breast cancer and improving breast cancer outcomes.

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Vitamin D and Breast Cancer Prevention

Vitamin D plays an important role in breast cancer prevention; an estimated 75% of breast cancer (adenocarcinoma) could be due to vitamin D deficiency, and therefore, easily prevented with vitamin D alone. Several studies, including those published using GrassrootsHealth cohort data, have demonstrated the relationship between vitamin D status and the risk of breast cancer.

Lowe et al. (2005) found an 83% Lower Breast Cancer Risk with a Vitamin D Level of 60 vs. 20 ng/ml
Abbas et al. (2007) found a 69% Lower Breast Cancer Risk with Vitamin D Level of 30 vs. 12 ng/ml
McDonnell et al. (2018) found an 82% Lower Breast Cancer Risk with Vitamin D Level of 60 vs. 20 ng/ml
Song et al. (2019) found a 71% Lower Breast Cancer Risk with Vitamin D Level of 60 vs. 20 ng/ml

More Research Here

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Vitamin D and Outcomes Among Women with Breast Cancer

Research also demonstrates that it is not too late to affect outcomes with vitamin D, even after a breast cancer diagnosis.

Yao et al. (2021) found a 27% Lower Risk of Breast Cancer Death, a 21% Lower Risk of Recurrence-Free Death, and an 18% Lower Risk of Invasive Disease-Free Death with Vitamin D Levels of 30 ng/ml vs. 20 ng/ml or Lower at the Time of Diagnosis
Madden et al. (2018) found a 49% Lower Risk of Breast Cancer Death with Vitamin D Supplementation Initiated within 6 Months of Diagnosis
Mohr et al. (2014) found a 44% Lower Risk of Breast Cancer Related Death with Vitamin D Levels of 30 ng/ml vs.17 ng/ml among Breast Cancer Patients…

…in fact, the vitamin D level accounted for 97% of the variance of the relationship between vitamin D level and breast cancer fatality (meaning it made almost all the difference)!

More Research Here

Omega-3s, Magnesium, Selenium, and Vitamin C are Among Other Nutrients That Can Affect Breast Cancer Risk and Outcomes

Other nutrients are also important for reducing risk of breast cancer and improving outcomes among women who get breast cancer. Studies have shown

an approximately 40% lower breast cancer risk with higher omega-3 intake (Zheng et al. 2013)
40% lower breast cancer risk among women with a higher magnesium intake vs a lower magnesium intake (Huang et al. 2019)
58% lower risk of breast cancer death with higher levels of selenium (Demircan et al. 2021)
15% lower breast cancer mortality with vitamin C (Harris et al. 2014)

More Research Here

Click here to view the entire email from GrassrootsHealth.

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