The spike protein is gone within a few weeks. So it can’t hang around to cause infertility (not that there is even a way that it could). MRNA is degraded and removed by the body within a few days. As the mRNA can’t enter the nucleus it is impossible for it to alter DNA. MRNA can enter cells, but not into the nucleus where the DNA is housed. If you are then later exposed to the COVID-19 virus, you now have antibodies that can fight the virus. The body then makes these spike proteins, but then quickly recognizes these proteins as foreign, so it makes antibodies to destroy the spike proteins. The mRNA carries the genetic code to make the spike protein found on the surface of SARS-CoV-2 (the virus that causes COVID-19). Furthermore, this cytotoxic impact is accompanied by premature menopause, which would have been identified in the early studies and given the number of people younger than 50 who have been vaccinated, we would have widespread reports of premature menopause if this effect on the ovary existed, but we don’t.īoth the Pfizer-BioNTech and Moderna vaccines contain mRNA or messenger ribonucleic acid. Also, this effect happens fairly quickly after exposure, so if any vaccine ingredient had this impact on the ovary it would have already been identified in animal studies and in the first studies on humans. We know this can’t happen with either mRNA vaccine as no ingredient in the vaccine is cytotoxic in this way. This happens because chemotherapy is cytotoxic (meaning it kills cells, and unfortunately, this also includes the immature eggs in the ovary). There are medications, some chemotherapy drugs as previously noted, that are known to have permanent effects on the ovary. ![]() This leaves us with the possibility of directly affecting the ovary or how the brain signals the ovary. This explains why nothing in the vaccine can possibly permanently affect the endometrium or mucus. When the drug is stopped, the cervical mucus reverts to normal. Currently, contraception that uses a progestin (a synthetic form of progesterone), works by affecting the cervical mucus. Cervical mucus is constantly produced, so there is no way one or two injections could have a permanent effect. The lining of the uterus (endometrium) regenerates after each menstruation, so this is not a site of potential damage by the vaccine (yes, there could be short term changes in menstruation from the immune response, but nothing permanent nor anything that impacts fertility, you can read more about that here ). The vaccines are 0.1 teaspoon or less! So on top of everything this mystery chemical would need to be incredibly potent. And this would have to happen from just one or two injections of very tiny amounts (Moderna 0.5ml and Pfizer-BioNTech 0.3 ml). Some can be very toxic to the immature eggs in the ovary, leading to infertility, but these drugs may also be the only option to treat a specific cancer.Īnd yes, these studies also happened with the COVID-19 vaccines.įor a medication to cause infertility it would have to do one or more of the following: affect the part of the brain that signals the the ovary, damage the developing eggs in the ovary, severely damage the lining of the uterus (endometrium), or cause the cervical mucus to become hostile to sperm (basically creating a chemical road block for the sperm to meet an egg). This information means researchers know which drugs might theoretically impact fertility early on in the process, and if fertility concerns exist, the drug is abandoned unless the benefit outweighs that risk. The unpredictable can and does happen.įrom a fertility standpoint, researchers typically administer the drug, usually in much higher doses than would be used for humans, to animals and then look at the brain and the reproductive organs to see if the drug concentrates in these tissues and for any negative effect. They know the molecular structure of each chemical and have a good idea how it might interact with cells before it even gets to animal trials, but animal trials are still essential because how a chemical acts in the body may be very different than in a petri dish. ![]() Researchers aren’t just throwing drugs against a wall in the lab to see what sticks.
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