By TNT Bureau
June 8, 2017: According to a new study, consuming probiotic-rich dairy products like milk and yogurt help to prevent breast cancer. The researchers from Lawson Health Research Institute in Canada said that the bacteria that have the potential to assist breast cancer are present in the breasts of cancer patients, whilst helpful bacteria are more plentiful in healthy breasts, where they may in fact be protecting the concerned individual from cancer.
Probiotics helps protect against breast cancer
The findings may result eventually to the use of probiotics like yogurt and milk to protect women against breast cancer, according to the researchers. For the study, they obtained breast tissues from 58 women who were suffering from lumpectomies or mastectomies for either benign (13 women) or cancerous (45 women) tumors.
Next, the researchers used DNA sequencing to recognize bacteria from the tissues and culturing to corroborate that the organisms were alive. It was found that women with breast cancer had eminent levels of Escherichia coli and Staphylococcus epidermidis, which induce double-stranded breaks in DNA in HeLa cells, which are cultured human cells.
The researchers said that double-strand breaks are the most damaging kind of DNA damage and are caused by genotoxins, reactive oxygen species, and ionising radiation.
On the other hand, Lactobacillus and Streptococcus, known to be health-promoting bacteria, were more widespread in healthy breasts than in cancerous ones. Both groups have anticarcinogenic properties, researchers said.
For instance, natural killer cells are critical to controlling growth of tumors, and a low level of these immune cells is linked with increased occurrence of breast cancer. Streptococcus thermophilus produces anti-oxidants that neutralise reactive oxygen species, which can cause DNA damage, and thus, cancer, researchers said.
The researchers have shown that probiotic lactobacilli ingested by women can reach the mammary gland. Combined with our work, this raises the question, should women, particularly those at risk for breast cancer, take probiotic lactobacilli to augment the proportion of beneficial bacteria in the breast, the researchers said.