People generally think that condoms and condoms are the same thing, just called different, but in fact, the effectiveness of traditional natural latex condoms in blocking sexually transmitted diseases is being questioned by more and more research findings. Researcher Zhu Qi, secretary general of the Chinese Sex Society, pointed out that it is not scientific to call condoms “condoms”. Some studies have shown that the failure rate of using condoms to prevent HIV, hepatitis B and condyloma is much higher than preventing pregnancy, and that condoms ≠ condoms. The role of traditional latex condoms is to block, as long as they are used correctly, the transmission of viruses can be blocked to a certain extent. Under existing medical conditions and in the absence of better precautions, the widespread promotion of condom use has been widely adopted by governments in order to reduce sexually transmitted diseases and increase relative safety. However, how effective are condoms in blocking viruses? Can they block 100% of all viruses? Zhang Haiping, Department of Dermatology and Venereology, Xuanwu Hospital, Capital Medical University Condoms have made important contributions to human beings in terms of contraception and preventing the spread of sexually transmitted diseases, however, they can also “condom” women’s health while preventing male semen from entering the female reproductive tract. The New England Journal of Medicine reports a 16.7% failure rate for condoms to prevent HIV, and the British Journal of Social Science Medicine reports a 31% failure rate for condoms to prevent HIV. A scientific task force of the National Institutes of Health (NIH), the Food and Drug Administration (FDA), the Centers for Disease Control and Prevention (CDC), and the U.S. Agency for International Development (USAID) studied the effect of condoms on nine types of sexually transmitted diseases: hepatitis B, AIDS, gonorrhea, chlamydia, syphilis, soft chancre, lymphogranuloma venereum, genital herpes, and condyloma acuminata. On July 20, 2001, the Task Force, in conjunction with the U.S. Department of Health and Human Services (HHS), issued a report stating: “There is no scientific evidence that condoms are effective in preventing most sexually transmitted diseases. There are three main reasons for this: First, viruses such as HIV, hepatitis B, and human papilloma are much smaller than sperm, and just because condoms can block sperm does not necessarily mean that they can block all kinds of viruses. Traditional condoms each about more than 100 million more than 120 nanometers pore size, its latex membrane body there are five thousand to seventy thousand nanometers between the natural fissure, only the diameter of similar to the size of human sperm particles (diameter of about 3000 nanometers) effective barrier, and for the diameter of the particles equal to or less than 120 nanometers and can not be completely blocked, that is, 42 nanometers of hepatitis B virus, 50 to 55 nanometers of human Second, HIV can invade the mucous membrane and skin of reproductive organs through several ways, while sperm can only enter the fallopian tube, which is the only channel; Third, pregnancy is limited by the time of ovulation, while HIV infection is not limited by any time. All these factors determine that even if condoms are used correctly, the chances of contracting HIV, hepatitis B, human papilloma and other viruses are higher than pregnancy. Not only that, but the German Institute for Risk Assessment revealed new research information: latex condoms can generate a carcinogenic substance – nitrosamines – during the vulcanization process. Animal experiments have shown that the local application of nitrosamines in the skin and mucous membranes at a total of about 1g induces local or systemic tumors, especially liver tumors. Although the nitrosamines released from condoms are far from this measurement, there is still a potential risk of tumor induction if the number of uses is frequent. In addition, some people who are allergic to latex proteins are at risk of developing allergies after using latex condoms. In addition, traditional condoms are acidic, which can disrupt the acid-base balance of women’s vaginas and cause various gynecological diseases. So it seems that the density is not enough to effectively block various viruses such as AIDS and hepatitis B; there are carcinogenic substances such as nitrosamines; latex protein induced allergic reactions; and natural latex condoms are alkaline, which are the four major defects that traditional latex condoms cannot overcome. Traditional latex condoms are not equal to safety!