Being your own doctor can be unhealthy
I fully understood why this person's claim had been rejected and his coverage cancelled. And, after having read his reply to them, I realized that he had absolutely no understanding of high blood pressure and how it could have been the cause of his heart attack.
Always be 'up front' with your health insurer about high blood pressure
Last year we had a couple of fairly recent applicants get hospitalized. Their hospitalization had something to do with their history of hypertension.