Impact of Diet on Mammary Gland Microbiome and Breast Health
Introduction to the Study
A new study explores the influence of Mediterranean and Western diets on the microbiome of mammary glands and its implications for breast health and cancer. Recent research has revealed that mammary glands contain a microbiome, a community of microorganisms found in breast tissue. Notably, breast tumors show reduced levels of Lactobacillus, a type of bacteria. This study aims to determine whether dietary choices can affect Lactobacillus levels and, consequently, breast health.
The Link Between Diet and Microbiome
It is well-established that diet influences gut bacteria, and dietary choices are considered a lifestyle factor that may elevate breast cancer risk. However, there is limited evidence examining how diet impacts bacterial populations in breast tissue and its potential connection to breast cancer. To fill this gap, researchers from the U.S. investigated the effects of Mediterranean and Western diets on breast tissue bacteria, with findings published in Cell Reports.
Methodology of the Study
In this study, female monkeys were fed either a Western diet or a Mediterranean diet for 31 months. Following this period, the researchers examined their mammary gland tissue to analyze the types of bacteria present.
Findings on Diet and Bacterial Regulation
The results revealed that diet significantly regulates bacteria populations specific to the mammary glands in established female monkey models. The Mediterranean diet resulted in a tenfold increase in Lactobacillus levels in the mammary glands compared to those on a Western diet. Conversely, monkeys on a Western diet showed higher levels of Ruminococcus, Lachnospiraceae, Oscillospira, and Coprococcus in their breast tissue. Additionally, those following the Mediterranean diet exhibited increased levels of bile acid metabolites and bacteria-processed compounds with potential anti-cancer properties.
Implications for Breast Health
This study underscores the impact of diet on the bacterial composition of mammary glands, suggesting that dietary choices may influence breast health. The findings indicate that diet could play a role in breast inflammation and potentially lead to breast cancer. Given the limited research in this area, further studies are necessary to determine whether dietary changes or probiotic supplementation can prevent breast cancer.
Conclusion
This research highlights the critical relationship between diet and breast microbiome health. Understanding these interactions could pave the way for new dietary recommendations aimed at reducing breast cancer risk.
Reference
Shively, C. et al. 2018. Consumption of Mediterranean versus Western Diet Leads to Distinct Mammary Gland Microbiome Populations. [Online]. [9 October 2018]. Available from: file:///C:/Users/He160280/Downloads/PIIS2211124718313822%20(1).pdf