Rumor – The shutdown of the CERN particle accelerator altered the menstrual cycle of women worldwide.
Analysis
The announcement of a new scheduled pause in the activities of the Large Hadron Collider (LHC), CERN’s main particle accelerator, has once again sparked theories that have been circulating on social media for years. On different occasions, experiments conducted by the European laboratory have already been linked, without evidence, to alleged changes in gravity, time, and even supernatural phenomena.
Following the release of reports regarding the interruption of the equipment’s operations for a new stage of maintenance and upgrades, videos began to circulate claiming that millions of women noticed changes in their menstrual cycle right after the accelerator was shut down. According to the narrative, CERN’s experiments affect space-time and, consequently, biological processes across the entire planet. Read:
CERN SHUT DOWN and this is ALTERING WOMEN all over the world! It’s happening worldwide! Millions of women have reported changes in their periods since CERN shut down on June 29, 2026, and that’s not even all! There are other strange things happening! “Several women around the world are reporting changes in their menstrual cycle this June and July. Are you aware of this? Did anything happen to you? And how could this be related to advanced technology experiments that are messing with time? So, this recently went viral on several networks, okay? Several women from all over the world reporting, okay, problems or changes in their menstrual cycle.
Whether it’s an irregular cycle, double menstruation in the month, or the cycle not coming at all, including menopausal women who had a cycle afterwards, who weren’t having them anymore. This one here, if you don’t know, is the LHC. It’s the large particle collider which is a big laboratory over in Europe. Except what several theories say is that there are secret experiments happening inside the LHC and, since they are messing with very deep things in physics, this ends up affecting gravitation and, consequently, space-time. That the LHC’s own experiments influence time here on Earth. Except now, on June 27th, the last experiment took place there at the LHC, and it was officially deactivated on June 29th, okay?
And it was at very high energy in these last few days because it’s going to spend four years stopped for maintenance, for, for updates, and it only comes back in 2030. And then, since it was deactivated, several people around the world started reporting perceiving time differently, as if time were passing slower and was no longer so accelerated. So, was the LHC accelerating time here on Earth and now there’s even some change in women’s menstrual cycles because the gravitational field is changing and maybe it’s going back to regulating time that was misadjusted because of the LHC? Anyway, this is very crazy, okay? Because people were already talking about time and now there’s this report about menstruation. And you? Have you had any perception about this? Do you think time is passing differently? Has your cycle changed? What have you been feeling there in these last few weeks?”
Fact-Check
Given the reach of these publications, it becomes necessary to evaluate the facts in a technical and well-founded manner. Below, we will answer the following essential questions to understand the case: 1) Has women’s menstrual cycle been altered due to the shutdown of the CERN particle accelerator? 2) Is there any chance that the shutdown of the CERN particle accelerator could affect anything in the outside world? 3) What could have changed the menstrual cycle of some women?
Has women’s menstrual cycle been altered due to the shutdown of the CERN particle accelerator?
There is absolutely no scientific evidence indicating that the shutdown of the LHC caused changes in the menstrual cycle of women anywhere in the world.
It is true that CERN temporarily halted the accelerator’s operations for a period of maintenance and upgrades, as explained in reports regarding the equipment’s new phase. However, no scientific institution, health authority, or published study has linked this pause to physiological changes in the population.
There are also no surveys showing that millions of women experienced menstrual changes at the same time as a result of the laboratory’s shutdown. The accounts shared on social media are anecdotal and do not constitute scientific evidence of a cause-and-effect relationship.
Is there any chance that the shutdown of the CERN particle accelerator could affect anything in the outside world?
Not in the way described in the publications. The Large Hadron Collider is equipment built to study fundamental particles of matter under highly controlled conditions. The collisions occur inside underground tunnels, and their effects remain restricted to the experimental environment.
There is no known physical mechanism that allows the operation—or shutdown—of the accelerator to alter Earth’s gravitational field, modify the passage of time, or produce biological effects on people located thousands of miles away from the laboratory.
The pause in LHC operations is part of the facility’s normal operating schedule. As shown in reports from science news outlets, the interruption occurs for maintenance and preparation for new experiments, a procedure planned since the project’s inception.
What could have changed the menstrual cycle of some women?
The menstrual cycle can undergo changes due to various factors, many of which are quite common. Stress, hormonal shifts, starting or stopping contraceptives, weight changes, intense physical exercise, thyroid disorders, polycystic ovary syndrome, pregnancy, perimenopause, and other conditions can influence the duration and regularity of menstruation.
Furthermore, occasional variations in the cycle are relatively frequent and do not always indicate a health problem. If the changes persist, are intense, or are accompanied by other symptoms, the recommendation is to seek a medical evaluation. To date, there is no scientific evidence linking these changes to the operation or shutdown of the CERN particle accelerator.
Conclusion
There is no evidence that the shutdown of CERN’s Large Hadron Collider (LHC) altered the menstrual cycle of women anywhere in the world. The pause in the equipment’s activities is part of the normal maintenance schedule, and there is no known scientific mechanism that allows the accelerator to influence time, gravity, or biological processes outside the laboratory. Menstrual changes can occur for various reasons, but there is no proof whatsoever that they are related to the experiments conducted by CERN.
Fake news ❌
Ps: This article is a suggestion from readers of our Fact-Checking Platform. If you want to suggest a topic to our Fact-Checking Platform, please contact us via email at boatos.org@gmail.com and WhatsApp (link here: https://wa.me/556192755610)