High estrogen hormones present during a woman’s fertile years contributes to this acidic environment. Estrogen induces production of mucous in our intimate area lining and therefore provides ample nutrition for a specific microflora – lactobacillus to grow. These good bacteria break down the mucous membrane in our intimate area and metabolizes it into lactic acid. The lactic acid creates an acidic environment therefore ensuring harmful bacteria, fungi and yeasts cannot proliferate.