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Stanford Medicine study shows why mRNA COVID-19 vaccine can cause myocarditis
Stanford Medicine News Center ^ | December 10, 2025 | Bruce Goldman

Posted on 01/19/2026 12:41:21 PM PST by KingofZion

Stanford Medicine investigators have unearthed the biological process by which mRNA-based vaccines for COVID-19 can cause heart damage in some young men and adolescents — and they’ve shown a possible route to reducing its likelihood.

Using advanced but now common lab technologies, along with published data from vaccinated individuals, the researchers identified a two-step sequence in which these vaccines activate a certain type of immune cell, in turn riling up another type of immune cell. The resulting inflammatory activity directly injures heart muscle cells, while triggering further inflammatory damage.

*** mRNA vaccines are viewed as a breakthrough because they can be produced quickly enough to keep up with sudden microbial strain changes and they can be rapidly adapted to fight widely divergent types of pathogens. But, as with all vaccines, not everyone who gets the shot experiences a purely benign reaction.

Vaccine-associated myocarditis occurs in about one in every 140,000 vaccinees after a first dose and rises to one in 32,000 after a second dose. For reasons that aren’t clear, incidence peaks among male vaccinees age 30 or below, at one in 16,750 vaccinees.

Fortunately, most of these cases end well, Wu said, with full heart function retained or restored. Recovery is typically swift.

“It’s not a heart attack in the traditional sense,” he said. “There’s no blockage of blood vessels as found in most common heart attacks. When symptoms are mild and the inflammation hasn’t caused structural damage to the heart, we just observe these patients to make sure they recover.”

However, Wu noted, if the inflammation is severe the resulting heart injury can be quite debilitating, leading to hospitalizations; ICU admissions for critically ill patients; and deaths, albeit rarely.

***MORE

(Excerpt) Read more at med.stanford.edu ...


TOPICS:
KEYWORDS: mrna; pandemic; vaccine

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Of course, they lied to us about the safety of the vax. Don't let you boys get the shot.
1 posted on 01/19/2026 12:41:21 PM PST by KingofZion
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To: KingofZion

Science deniers!


2 posted on 01/19/2026 12:43:26 PM PST by bray (It's not racist to be racist against races the DNC hates.)
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To: KingofZion

I need some new conspiracy theories. All my old ones have come true.


3 posted on 01/19/2026 12:44:37 PM PST by dayglored (This is the day which the LORD hath made; we will rejoice and be glad in it. Psalms 118:24)
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To: KingofZion

“Recovery is typically swift.
we just observe these patients to make sure they recover.”


4 posted on 01/19/2026 12:44:52 PM PST by TexasGator (1)
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To: KingofZion

I’m glad I’m a pureblood.


5 posted on 01/19/2026 12:54:10 PM PST by EvilCapitalist (Pets are no substitute for children)
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To: KingofZion
"Recovery is typically swift. we just observe these patients to make sure they recover.”

Long term damage??

Well, they started this vaxxine insanity in 2021. Long term damage results will........take a little longer.

Oh, and I just remembered when the changed the definition of the word vaccine. When the democRATS return to power, will they alter the definition of damage? Alter definition of the heart?

6 posted on 01/19/2026 12:59:28 PM PST by Ronaldus Magnus III (Do, or do not, there is no try. )
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To: KingofZion

The funny part is how eager they are to down play down the complications. The risk benefit ratio is appalling for a mild infection that is only serious in immunocompromised, elderly or people with multiple chronic disease. Also the benefit has noot been established. IMO all Risk no Benefit except $ to the insurance companies, facilities and folks getting paid for giving vaccines.


7 posted on 01/19/2026 12:59:43 PM PST by JayGalt ( “The strong do what they can, the weak suffer what they must”.)
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To: KingofZion; All

Where were they when it mattered?


8 posted on 01/19/2026 1:09:28 PM PST by SMARTY (In politics, stupidity is not a handicap. Napoleon Bonaparte I)
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To: KingofZion

Wu makes at least a dozen assertions with zero scientific validation; apparently,that’s what passes as medical science at Stanford ...


9 posted on 01/19/2026 1:13:58 PM PST by catnipman ((A Vote For The Lesser Of Two Evils Still Counts As A Vote For Evil))
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To: Ronaldus Magnus III
...I just remembered when they changed the their definition of the word vaccine.

They changed their definition, just like they changed their definition of man and woman. The definition hasn't changed.

The Jim Jones Jab is not a vaccine, regardless of what they changed their definition to.

10 posted on 01/19/2026 1:16:21 PM PST by T.B. Yoits
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To: KingofZion

How many young males did they murder with this worthless shot?


11 posted on 01/19/2026 1:17:04 PM PST by HYPOCRACY (Wake up, smell the cat food in your bank account. )
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To: KingofZion

At 86, I’m getting on to senior status. Stayed healthy during the epidemic by using the horse paste Ivermectin.


12 posted on 01/19/2026 1:19:35 PM PST by ryderann
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To: KingofZion

The damage is forever.
Maybe “ full function will be retained”
Or maybe the area damaged will someday interrupt the electrical activity of the heart and…”suddenly”


13 posted on 01/19/2026 1:24:51 PM PST by silverleaf (“Inside Every Progressive Is A Totalitarian Screaming To Get Out” —David Horowitz)
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To: KingofZion

Add another one to the “so now they tell us” file of negative COVID side effects.


14 posted on 01/19/2026 1:30:53 PM PST by Opinionated Blowhard (When the people find that they can vote themselves money, that will herald the end of the republic.)
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To: KingofZion

I read a study where 50% of athletes at a university were tested and showed myocarditis from the shots. Another study showed 50% of those with symptomatic myocarditis die within 5 years.

If the athletes were symptomatic, that would be 25% mortality in 5 years. If not symptomatic, there is still heart damage so their lives will be affected, it’s just when and how much.

People need to hang.


15 posted on 01/19/2026 2:02:21 PM PST by Clay Moore (My pistol identifies as a cordless hole punch. )
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To: KingofZion
The article says, "A case of COVID-19 is about 10 times as likely to induce myocarditis as an mRNA-based COVID-19 vaccination."

I don't buy that at all. Someone has their facts backwards.

16 posted on 01/19/2026 2:19:44 PM PST by ducttape45 (Jeremiah 17:9, "The heart is deceitful above all things, and desperately wicked: who can know it?")
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To: KingofZion

Minor problem, only impacts 1 in 16,000 unless you are a young and very healthy pilot. Minor problem as well, it may become under study. Not really a big deal though because recovery is usually quick.

/s


17 posted on 01/19/2026 2:30:39 PM PST by Sequoyah101
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To: Ronaldus Magnus III

It was August when the doddering old fool bidet wagged his bony finger in our faces and demanded that we, “get with the program” and get vaccinated then he ordered the military to be vaccinated and anyone else he could find.

Some have said of others that they do not wish for someone’s death but look forward to reading their obituary with keen anticipation. Not me, I’m not that gracious. I pray for the old fart’s death and will dance on his freakin’ grave if I ever get the chance and then I will leave my calling card.


18 posted on 01/19/2026 2:34:42 PM PST by Sequoyah101
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To: KingofZion

Old news by about 4+ years for those in the know but nice to see some medical studies catching up.

Natural immunity was also significantly better than the clot shot as well.


19 posted on 01/19/2026 2:43:40 PM PST by maddog55 (The only thing systemic in America is the left's hatred of it!)
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To: EvilCapitalist

EvilCapitalist wrote: “I’m glad I’m a pureblood.”

Really? You probably don’t realize just how anti-semitic that is.

https://www.theedgemedia.org/purebloods-anti-semitism-white-supremacy-anti-vax/


20 posted on 01/19/2026 3:54:46 PM PST by DugwayDuke (Most pick the expert who says the things they agree with.)
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