For many years, condoms have been socially accepted as an important form of contraception against STDs. However, some expert studies have found that although condoms have excellent protection against infectious diseases, another problem that occurs in women who use condoms regularly is gynecological inflammation. Is it really possible that condoms can increase gynecological inflammation? Gynecologists say that, in general, the normal human body has both “acidic” and “alkaline” qualities. The blood, bones, muscles, heart, liver, kidneys and other parts of the body alkaline, is a symbol of the health of the body. However, there are several parts of the body that must be acidic in order to be considered healthy, for example, the ideal environment for the vagina is weakly acidic. Some external factors and bad habits can cause subtle changes in vaginal ph, which can lead to various gynecological diseases and affect the health of the female reproductive system. How do condoms cause gynecological diseases? Under normal circumstances, the vagina is home to a large number of microorganisms, more than 90% of which are Lactobacillus, also known as the defender of the vagina. This weak acidic environment can inhibit the growth of harmful germs and devour foreign bacteria, kill harmful germs that enter the vagina within 24 hours, and play a role in defending the vagina from invading pathogenic microorganisms. On the contrary, when this acidic environment is damaged by alkaline medium, the normal ph value of women’s vagina will change and the reduction of lactobacilli will greatly reduce the natural defense ability of vagina, resulting in the proliferation of bacteria and causing various gynecological inflammatory diseases. The imbalance of ph value, in addition to sowing gynecological diseases, will also affect reproductive function.