Study: Low Levels of Vitamin D Linked to High Risk of Premenopausal Breast Cancer

Holy Hormones Honey!  Lack of Vitamin D linked to breast cancer? This is important news because it puts our health in our own hands – instead of being afraid of  the ‘c’ word or that we would become the 1 in 8 women who will develop breast cancer.  ‘Develop’ that is the key word.  Breast cancer does not just arrive at your door one day – it develops over time. And to some extent the health of our breasts is in our control.

Time to re-evaluate our lifestyles. Time to re-evaluate our diets.  Sunshine and nutrition are the key to good health. Do not substitute with microwaved food and tanning beds.  There are many who believe – and myself for one – that there is no such thing as ‘disease’ it is really a lack of nutritional health that is causing our woes. We have to get out of the “one pill for every ill” modality and go back to what our wise women grandmother’s told us about how an “apple a day keeps the doctor’s away.”

Why is this happening at menopause? Because menopause is another transition time in a woman’s life. Hormones are shifting – and the endocrinally whacked out we are – the more difficult of a time we will have with this shift.  And most of us – with pregnancies in our history – and nutritionally depleted in addition to being hormonally balanced.

Low Vitamin D Levels Linked to High Risk of Premenopausal Breast Cancer

Jan. 24, 2013

The research shows that diet and shifts in body metabolism that parallel changes seen during obesity and Type 2 diabetes can also stimulate breast growth entirely independent of estrogens effects. (Credit: iStockphoto/Günay Mutlu)

Credit: iStockphoto/Günay Mutlu

A prospective study led by researchers from the University of California, San Diego School of Medicine has found that low serum vitamin D levels in the months preceding diagnosis may predict a high risk of premenopausal breast cancer.

The study of blood levels of 1,200 healthy women found that women whose serum vitamin D level was low during the three-month period just before diagnosis had approximately three times the risk of breast cancer as women in the highest vitamin D group. The study is currently published online in advance of the print edition of the journal Cancer Causes and Control.

Several previous studies have shown that low serum levels of vitamin D are associated with a higher risk of premenopausal breast cancer. “While the mechanisms by which vitamin D could prevent breast cancer are not fully understood, this study suggests that the association with low vitamin D in the blood is strongest late in the development of the cancer, “said principal investigator Cedric Garland, DrPH, FACE, professor in the Department of Family and Preventive Medicine at UC San Diego.

Analyses of vitamin D levels measured more than 90 days before diagnosis have not conclusively established a relationship between serum levels and risk of premenopausal breast cancer in the present cohort. However, this new study points to the possibility of a relevant window of time for cancer prevention in the last three months preceding tumor diagnosis -a time physiologically critical to the growth of the tumor.

According to Garland, this is likely to be the point at which the tumor may be most actively recruiting blood vessels required for tumor growth. “Based on these data, further investigation of the role of vitamin D in reducing incidence of premenopausal breast cancer, particularly during the late phases of its development, is warranted,” he said.

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Author: Leslie Carol Botha

Author, publisher, radio talk show host and internationally recognized expert on women's hormone cycles. Social/political activist on Gardasil the HPV vaccine for adolescent girls. Co-author of "Understanding Your Mood, Mind and Hormone Cycle." Honorary advisory board member for the Foundation for the Study of Cycles and member of the Society for Menstrual Cycle Research.

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