Urinary tract infections often occur in post-menopausal women and are prone to recurrent infections because after menopause, the lack of oestrogen causes a decrease in lactobacilli in the vagina, leading to an increase in the multiplication of pathogenic bacteria, which can easily lead to vaginitis complicated by urinary tract infections.
When urinary tract infections occur in older women, sensitive antibiotics need to be used on a case-by-case basis. After the urinary tract infection has healed, estrogen replacement therapy can be used to maintain a normal vaginal environment, increase lactobacilli and remove pathogenic bacteria to reduce the incidence of diseases such as urinary tract infections, but note that estrogen therapy must be used under medical supervision.