How does vitamin D affect breast cancer?
In recent years, there have been various statements about how the intake of vitamin D affects the human body. Researchers have now found that large amounts of vitamin D reduce the risk of breast cancer in women.
Scientists at Creighton University and the American Cancer Society found in their current study that high levels of vitamin D can protect women from breast cancer. The doctors published the results of their study in the English-language journal "PLOS One".
Study examined effects of different concentrations of vitamin D.
There are already many studies that vitamin D can help reduce the risk of developing breast cancer in women. So far, however, not many studies have examined this association over a wide range of vitamin D concentrations, especially in concentrations> 40 ng / ml, the scientists explain. To investigate the relationship between different ranges of vitamin D concentrations and breast cancer risk, physicians analyzed data from two clinical studies and a prospective cohort that medically monitored over 5,000 women for a period of four years.
The risk of breast cancer has been significantly reduced
The current prospective cohort was conducted to investigate the relationship between breast cancer risk in women and a wide range of serum 25 (OH) D concentrations, which is the primary form of vitamin D in the blood, the doctors explain. The 25 (OH) D concentrations were in the range of 60 ng / mg, the experts add. The average age of the participants was 63 and none of the subjects had breast cancer at the start of the study. The data for the study were collected between 2002 and 2017 and the vitamin D level in the blood was measured several times. Surprisingly, researchers found that women with 25 (OH) D concentrations above 60 ng / ml had only a fifth of the breast cancer risk of women with 20 ng / ml concentrations of 25 (OH) D or less.
What is the best way to prevent breast cancer?
A significant increase in vitamin D blood levels above 20 ng / ml appears to be extremely important for the prevention of breast cancer, says study author Sharon McDonnell from the American Cancer Society. However, to reach such a level, a person would need to take 4,000 to 6,000 units (IU) as a dietary supplement each day, perhaps less if there is sufficient sun exposure, the expert adds.
How Much Vitamin D Supplements Should I Take?
So far, however, the recommendations for taking supplements have been much lower. Infants are advised to take only 400 IU of vitamin D3 daily, while people between the ages of one and 70 years are recommended 600 IU and 800 IU to all people over 70 years of age. The question of the correct and healthy minimum recommendation for vitamin D is likely to remain severe The authors suspect that discussions are causing concern.
More research is needed
In addition, the current study only showed results for postmenopausal breast cancer, and all women in the study were white women, the scientists' restriction. Therefore, further research is now needed to determine the benefits of vitamin D in premenopausal breast cancer and in women of different ethnic origins. Nevertheless, the researchers emphasize that the results of their research show a strong link between vitamin D and a reduced risk of breast cancer. (as)