I honestly could have written this post myself.
I deep-dive all sorts of medical and scientific topics. I find I have really solid comprehension of even very dense reports, and I am able to draw conclusions and suppositions from them that can help me and other people (part of why I do the reading I do is because of my work).
I'm in a medically-adjacent profession with a deep knowledge of the structure, function, and pathologies of the human body, but I am by no means a medical practitioner.
Yet I do often know way more about whatever condition I've looked into (or experiencing) than the medical professionals that I encounter. I seriously often have to tone it down.
I have long wished that medical advocacy was a thing. Having a deeply knowledgeable, compassionate, yet dispassionate third person in medical conversations would be so helpful to most patients! They're often overwhelmed by the gaps in communication styles and the infodump word salad of medical terms from doctors (who tend to be very siloed and forget their patients aren't trained in the way they are).