Drinking Coke will kill sperm? Ridiculous urban legends!

Rumors of cola spermicidal activity spread in Central and South America decades ago. It is believed that the carbonic acid in cola can kill sperm, and the sugar in it can "detonate" sperm. After shaking, Coke can be sprayed deep into the vagina, so women will use this technique to kill spermatozoa and contraception after "sex". In the 1960s, the American hard rock band TheFugs had a song called Coca-Cola Sprinkler, which was about this. This is indeed a brilliant idea, but it still needs to be scientifically verified. In 1985, three obstetrics and gynaecologists from Harvard Medical School in the United States turned up in the laboratory in order to test their authenticity. They added frozen sperm to three test tubes filled with cola. After observation big ass , the happy results came out: the number of sperm decreased, cola can affect sperm motility. The relevant conclusions were published in the New England Journal of Medicine on November 21 that year in the form of a letter from readers. Coke experiment: sperm motility is still this conclusion, immediately caused an uproar. Two years later, after reading this paper, Hong Chuanyue of Taipei Rongmin General Hospital decided to use more rigorous experiments to verify it. He used two brands and five different recipes of cola: classic, new, caffeine-free, diet, and Pepsi. Through the method of transmembrane migration, cola mixed with sperm was dripped on the film (which allows sperm to pass through), and normal saline was placed under the film. An hour later, he observed that at least 70% of the sperm remained motile, could successfully cross the film and would not be killed by Coke. The study, published in the journal Human Toxicology, overturns the views of American scholars. In other words, in order to seek contraception, wash the vagina with cola after sex, not only can not achieve the goal, but also easy to cause genital infection. As a carbonated drink, other ingredients such as caramel and pigment will be added to cola. Of course, it also contains less than 1% of the secret formula made up of some mysterious substances. The recipe is said to have been kept secret for more than a century, but in 2000 the European Academy of Food Sciences revealed that mysterious substances include extracts, filters and dyes from wild peas, ginger, mimosa, orange leaves, coca leaves butts , cinnamon and vanilla bark. It is they that make the taste of Coke unique. Among the related ingredients, caffeine especially attracts people's attention. So there are rumors that the caffeine in cola has spermicidal effect and should not be drunk too much. Is this true? In 2003, at the American Annual meeting of Reproductive Medicine lesbian double dildo , Fabio from Brazil. Pascalutu, based on a study of 750 male compatriots, found that men who drank coffee had better sperm motility, with caffeine playing a key role. However, some scholars in the United States believe that drinking three cups of coffee a day will affect a man's fertility. The conclusion is not unanimous, and there is still no definite public opinion at present. In addition, do not underestimate sperm, it can definitely have indomitable vitality when it has the opportunity to display its talents. Normal sperm can live for half a day in the vagina, two and a half days in the uterus and fallopian tubes, and up to 8 days in the cervix. However, if it is excreted from the body, it can only be a short-lived ghost for half an hour. In the face of rumors, it is indispensable to have a scientific spirit. You can ignore the false saying that "drinking cola will kill sperm, young men should be careful."
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