Does Not Recommend: Dr. Michael Yeadon, Pharmacologist, Toxicologist, and former Vice President of Pfizer
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Overview of Dr. Yeadon's Concerns:
Dr. Yeadon highlights his hypothesis that both the nanoparticles from the mRna vaccines and the spike proteins produced by the vaccine could spread throughout the bloodstream and cluster in organs throughout the body, especially the ovaries. His focus is primarily on the damage that the vaccine nanoparticles could do to the body over a long period of time. He cites several studies that were done on the potential toxicity of nanoparticles pre-pandemic and primarily says people should pause on getting the vaccine because not enough time has passed yet to confirm whether the nanoparticles could do serious harm to the body over the long term.
Bottom line: Dr Michael Yeadon is primarily working with hypotheses at this point, but he has immense credentials and a research background that make his concerns worth considering.
Rebuttal to Dr. Yeadon:
Direct Response to Dr. Yeadon’s Concerns About Female Fertility and the Covid-19 mRna Vaccines (David H. Gorski, MD, PhD, FACS)
Well-sourced, thorough article directly responding to Dr. Yeadon’s various concerns about female fertility. Full of citations. Points out that in the Pfizer Phase 3 trials pregnancy rates were not affected in female participants and that numerous studies of vaccinated women indicate that it is unlikely that nanoparticles will affect the female reproductive system in a significant manner. However, much of the data that Dr. Gorski cites is still pending peer-review and may need confirmation as time passes.
“The bottom line is that there is no evidence that the lipid nanoparticles in the Pfizer vaccine (or any of the COVID-19 vaccines) accumulate at significant quantities in the ovaries, much less cause female infertility. This new claim is nothing more than a repackaging of the previous claim that COVID-19 vaccines cause miscarriages and female infertility because of the supposed resemblance of sequences in the spike protein and the placental syncytin protein causing the immune response from the vaccine to attack syncytin, which was a repackaging of old anti-vaccine claims that vaccines sterilize women. Spike protein does not sufficiently resemble syncytin to cause miscarriages and infertility, and the lipid nanoparticles in the vaccines do not accumulate in the ovaries, much less cause female infertility.”