Dozens of British women have reported their breasts increased in size after receiving a Covid vaccine, MailOnline can reveal.
The revelation comes days after shocking footage showed a 19-year-old Canadian woman’s breast quadrupling in size in what experts say is a rare reaction to Pfizer’s Covid jab, dubbed the ‘Pfizer boob job’.
Now MailOnline has uncovered data from the UK’s medical medicine safety watchdog showing that there have been 33 reports of similar cases of ‘breast enlargement’ after Pfizer’s vaccine.
A further 11 British women reported a more extensive failure after the AstraZeneca jab, while four reported the same bizarre reaction after a Moderna vaccine.
These reports, made to the UK Medicines and Healthcare products Regulatory Agency (MHRA) Yellow Card scheme, are based solely on patient testimonials.
They have not been verified by medical professionals, and experts point out that it is possible that such unexpected physical changes occurred by chance – and have nothing to do with the shot.
However, doctors have argued that the link between the unusual reaction and the vaccine is indeed plausible.
In a recent medical report on a young woman who suffered the complication, they theorize that a bizarre immune system response to the vaccine may have caused cells in the breast to overgrow.
The report, written by doctors at the University of Toronto, told of a Canadian woman who went from a B cup to a triple G cup within six months after two doses of a Pfizer Covid jab.
The unnamed 19-year-old received her first dose of the Pfizer Covid vaccine in September 2022 and then noticed her breasts started to tingle and grow slightly.
Dozens of British women have reported their breasts increased in size after receiving a Covid vaccine, MailOnline can reveal
Both reactions accelerated after her second dose, just three weeks later.
In total, her breasts grew to a triple G cup size over a period of six months. The average British woman’s bra size is 36DD.
Rapid breast growth is a rare condition medically known as gigantomastia.
Experts are still investigating what causes it, although some cases are known to be the result of a hormone problem or a reaction to certain medications.
Doctors, who reported the case in the magazine Plastic and Reconstructive Surgery – Global Opensuggested that the vaccine may have caused a cause of gigantomastia called pseudoangiomatous stromal hyperplasia (PASH).
PASH itself is a poorly understood condition in which cells in the breast tissue called myofibroblasts overgrow as benign lumps.
It is rare because it has only been medically documented about 200 times, and there were no previous examples that had any connection to vaccines.
The unnamed woman is shown above after breast reduction surgery. She is considering further procedures to get back to her normal cup size
But exactly how the vaccine might have caused PASH is unknown.
The woman in the report had no underlying conditions and although her breasts appeared swollen and saggy, there were no masses.
An ultrasound and CT scan showed slightly swollen lymph nodes around the woman’s armpits and dense blood vessels, which doctors said came from the enlarged breast tissue.
Analysis of tissue samples taken from biopsies confirmed that the growth was the result of PASH.
Despite a course of treatment with steroids and antibiotics, no reduction in breast size was noted.
She opted to undergo a breast reduction procedure 11 months after the shot to reduce her breast size to a DD.
The patient underwent another procedure five months later due to asymmetry issues, returning her to her original B cup size.
While the experts said the timing suggested a link between the Covid jab and PASH, they said it could not be proven this was the culprit and called for further research.
“The association between the COVID-19 vaccine, PASH and breast hypertrophy warrants further investigation to understand the spectrum of responses to the vaccine,” they said.
The graph shows the cumulative number of Covid jabs distributed in Britain in November 2023
However, they criticized doctors who dismissed the woman’s concerns that her symptoms were linked to the vaccine.
“Although a temporal relationship does not establish causality, ignoring patients’ concerns can undermine trust,” they wrote.
‘Physicians should consider and value patients’ concerns when developing therapeutic relationships.’
In 2021, researchers from the University of Pennsylvania found that Covid vaccines can lead to swollen lymph nodes in the armpit, which can lead to abnormal findings on mammograms and breast ultrasounds.
British health officials were also aware of this link and informed staff that while this can occur, any abnormal findings from these scans should still be investigated as possible symptoms of breast cancer and not dismissed as a vaccine reaction.
Systems such as the MHRA’s Yellow Card reports theoretically allow experts to spot potential side effects through active monitoring, although some MPs are concerned the system is not proactive enough.
Such reports can serve as a ‘canary in the coal mine’ if patterns emerge with a particular drug, type of patient, and suspected response.