This is the study he discussed in that blog.
https://onlinelibrary.wiley.com/doi/epdf/10.1002/prca.202300048
Just from a layman’s point of view this is similar to the issue that I faced with MRI Contrast.
Let’s say that XYZ vax/drug is safe in a certain quantity with a certain half life. Okay Fine. But what happens to those that get stuck with the foreign mess in their body far longer than it should be and/or maybe in a far greater quantity than intended because of the way the body processes said drug/vax due to genetic factors.
The National Institute of Health has an Environmental Studies group that looks at what things cause disease...like vaccines, drugs, etc. An example is a current study on Myositis.
A heavy metal was in my body for months longer than Doctors claimed it should be...and during that time it really screwed me up. I could see the Vax doing same.
Is the Myocarditis temporary due to the Vax or long term. Who knows