Summary

This scientific review looked at the role of menopause and changing estrogen levels on the bacterial make-up of the vagina. It also addressed the fact that the addition of hormone therapy can help in rebalancing lactobacillus in the vagina. Per the study, "support the role of Lactobacillus species in maintaining vaginal homeostasis and how the vaginal microbiome structure in postmenopausal women changes with decreasing levels of circulating estrogen... Furthermore, hormone replacement therapy directly influences the dominance of Lactobacillus in the microbiota and can resolve vaginal symptoms (associated with menopause)."

You can view the whole study here: https://pubmed.ncbi.nlm.nih.gov/27451320/