Making sperm sterile
Research by Professor Lynn Fraser of King's College London has shown that genistein, which mimics the effects of estrogen, affects sperm in mice. "Human sperm is more sensitive to genistein than mouse sperm," Fraser said at a fertility conference. In experiments, Fraser found that small amounts of this chemical can damage male sperm, causing them to "deplete" and lose fertility as they swim towards the egg. The effects on sperm found in the laboratory may also have no direct connection with real life. But Dr. Alan Percy of the University of Sheffield in England said there was concern about whether these chemicals would affect mature sperm.
Women attempting to conceive should be cautious about eating soy products
Fraser added that if women consume soy and other foods rich in genistein, the impact on male fertility may be greater, as this chemical is likely to have an impact on sperm when it enters the woman's body to fertilize the woman. "Mother's exposure to this substance is probably more dangerous than father's exposure to it," Fraser explained
Although this is the initial study, Fraser speculates that these conclusions may affect women attempting to conceive. "According to our research, if you have a habit of consuming large amounts of soy products, you should limit your diet during ovulation," she said at a meeting of the European Society for Human Reproduction and Embryology
Who is shutting out "sperm" Li Ping and her husband Haicheng got married five years ago. At first, they didn't want to have children too early, so they kept on contraception. During this time, the elderly of both families have been urging the young couple to have a child, but they can't bear the urge of the elderly, so they are preparing to have a baby.