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 ...
maddog55 wrote: “Natural immunity was also significantly better than the clot shot as well.”
better at what? You have to catch covid to become ‘naturally immune’.
...yeah, that’s how natural immunity works.
Many people may have had COVID and never knew it. Wife and I never got the clot shot, never got sick and never got tested.
All vaccines and viruses can cause myocarditis.
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