Large review; Calcium lowers the risk of breast cancer

The AMORIS Trail investigated the effects of iron on breast health in almost 230,000 women. Over 19 years almost 11,000 of these women developed breast cancer. It was found that women in the higher range of calcium intake versus the lowest, had a reduced risk of breast cancer.

To further evaluate the effects of calcium on breast cancer the researchers performed a systematic review identifying two additional prospective studies which allowed them to perform a meta-analysis of the data. Higher calcium intake reduced the risk of breast cancer by 20%. The study and meta-analysis are published in the International Journal of Molecular Science. The research was performed by the Division of Cancer Studies at King’s College, London, along with a number of other European academic institutions.