There are numerous hoaxes about coronavirus vaccines, and especially in regard to the side effects they produce. One of them refers to the fact that vaccines can cause male infertility or erectile dysfunction.

Ranjith Ramasamy, Associate Professor of Urology at the University of Miami, has written an article in The Conversation where he disassembles those hoaxes, but where he also warns that disease can cause these problems.

“Until now, little research has been done on how viruses or vaccines affect the male reproductive system. But recent research by doctors and researchers here at the University of Miami they have shed new light on these questions, “says Ramasamy.

“I am the director of the Reproductive Urology Program at the University of Miami Miller School of Medicine. My colleagues and I discussed the autopsy tissues of the testes of six men who died from Covid-19 infection, “the expert explained.

“The result: the Covid-19 virus appeared in the tissues of one of the men, and a decrease in the number of sperm appeared in three,” he said. “Another patient, who survived Covid-19, underwent a testicle biopsy about three months after his initial Covid-19 infection cleared up. The biopsy showed that the coronavirus was still in his testicles“, he revealed.

The testicles … and the penis

“Our team also found that Covid-19 affects the penis. An analysis of penile tissue from two men who received penile implants showed that the virus was present seven to nine months after their Covid-19 diagnosis. Both men they had developed severe erectile dysfunction, probably because the infection caused a reduction in the blood supply to the penis, “said Ramasamy.

“In particular, one of the men had only mild Covid-19 symptoms. The other had been hospitalized. This suggests that even those with a relatively mild case of the virus they may experience severe erectile dysfunction after recovery, “said the expert.

A health worker shows a dose of the AstraZeneca vaccine against covid-19, in Madrid.

“These findings are not entirely surprising. After all, scientists know that other viruses invade the testicles and they affect sperm production and fertility, “says Ramasamy.

“An example: Researchers who studied the testicular tissues of six patients who died from the 2006 SARS-CoV virus found that they all had widespread cell destruction, with few or no sperm. It is also known that mumps and Zika viruses they can enter the testicles and cause inflammation. Up to 20% of men infected with these viruses will have poor sperm production “, reveals the expert.

“Additional research from my team brought good news. A study of 45 men showed that the mRNA vaccines from Pfizer and Moderna appear safe for the male reproductive system. This, then, is another reason to get vaccinated: to preserve male fertility and sexual function“Ramasamy pointed out.

“Of course, the research is only a first step on how Covid-19 could affect male sexual health; the samples were small. Studies must continue,” says the expert, adding that “still, for men who have had Covid-19 and then experienced testicular pain, it is reasonable to consider that the virus has invaded testicular tissue.Erectile dysfunction may be the result. These people should see a urologist“, sentence Ramasamy.

“There is no evidence that the vaccine harms a man’s reproductive system. But ignoring the vaccine and contracting Covid-19 very well could do it“, concludes the expert.


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